Class 12 Physics NCERT Solutions PDF

  • Class 12 Physics Chapter 1 Electric Charges And Fields PDF
  • Class 12 Physics Chapter 2 Electrostatic Potential And Capacitance PDF
  • Class 12 Physics Chapter 3 Current Electricity PDF
  • Class 12 Physics Chapter 4 Moving Charges And Magnetism PDF
  • Class 12 Physics Chapter 5 Magnetism And Matter PDF
  • Class 12 Physics Chapter 6 Electromagnetic Induction PDF
  • Class 12 Physics Chapter 7 Alternating Current PDF
  • Class 12 Physics Chapter 8 Electromagnetic Waves PDF
  • Class 12 Physics Chapter 9 Ray Optics And Optical Instruments PDF
  • Class 12 Physics Chapter 10 Wave Optics PDF
  • Class 12 Physics Chapter 11 Dual Nature Of Radiation And Matter PDF
  • Class 12 Physics Chapter 12 Atoms PDF
  • Class 12 Physics Chapter 13 Nuclei PDF
  • Class 12 Physics Chapter 14 Semiconductor Electronics Materials Devices And Simple Circuits PDF
  • Class 12 Physics Chapter 15 Communication System PDF

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  • NCERT Solutions For class 12 Physics
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CBSE Class 12 Physics NCERT Solutions - Free PDF Download

CBSE Class 12 Physics NCERT Solutions 2023-24 is provided in this article in the form of free-to-download pdf notes. Physics in Class 12 is one of the most crucial subjects for science students. To score well in the board exams, you must have a thorough understanding of each chapter of the subject. Solving and reviewing Class 12 Physics is made easier by the Class 12 Physics NCERT Solutions by Vedantu, these notes will help you to score brilliantly in Physics CBSE Class 12 examination.

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NCERT Solutions For class 12 Physics Chapter-wise List

Students must prepare for their CBSE board's exam with the appropriate study material. The NCERT Solutions for Class 12 Physics available on Vedantu is not only beneficial for boards but also for competitive exams like JEE , NEET , etc. as students can refer to it to properly understand the logic behind the concepts. Students can also download the Class 12 Physics NCERT Solutions in pdf format to access it later in offline mode.  

Detailed Overview of Class 12 Physics NCERT Solutions

Ncert solutions for physics class 12 - chapter at a glance: a quick look at key concepts.

Class 12 is a crucial phase in students' academic journey as they prepare for higher education and future career paths. To excel in their examinations, it is essential for students to have a comprehensive understanding of the chapters covered in each subject. The NCERT Solutions for Class 12 Physics provide a valuable resource for their studies. Understanding the class 12 Physics Chapters becomes essential for building a strong foundation for future studies. 

The Chapter at a Glance for Physics provides a quick overview, highlighting the key topics covered in each Physics Chapter. This helps you to score more in examinations. Prepare with Chapter at a Glance and Class 12 Physics NCERT Solutions for better results.

Class 12 Physics NCERT Solutions Chapter at a Glance

The concept of ‘Chapter at a Glance For Physics’ provides a concise overview of the chapters in Physics Class 12, enabling students to grasp the key topics and themes. You can get Class 12 Chapters in a capsule form which Vedantu’s Master Teachers create. 

With our meticulously designed solutions, you can delve into concepts such as mechanics, thermodynamics, electromagnetism, and more. Whether you're preparing for exams or aiming to deepen your understanding of the subject, our NCERT Solutions for Class 12 Physics are your ultimate study companion. Master the laws of nature and excel in your Class 12 examinations. Explore our Chapter at a Glance series today and unlock the mysteries of physics!

NCERT Class 12 Physics Solutions - Free PDF Download

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NCERT Solutions for Class 12 Physics | All Chapters

NCERT Class 12 Physics contains a number of chapters that gives you an extensive idea of the different aspects of physical science. The NCERT Solutions for Class 12 Physics PDF comes in handy while providing a proper grasp of the subject matter. You can refer to the solution material to understand the complex concepts and also know how to write error-free answers. So, students can opt to download the free Physics NCERT Class 12 PDF to ace their board exams.

Along with board exams, it is also vital for competitive exams. Expert faculty curates these solutions to help students understand all the topics in detail, no matter their level of intelligence. The answers in the NCERT Physics solution are written in easy language to help students develop an in-depth understanding of the concepts, according to the exam pattern as well as syllabus, prescribed by CBSE . All the chapters from the NCERT textbook are covered in the solutions.

NCERT Solutions Class 12 Physics Chapters

There are 15 chapters in the Class 12 Physics NCERT book ; brief information of the chapters are provided in the following section.

Physics Class 12: Chapter 1 Electric Charges and Fields

This is the first chapter in the Class 12 Physics textbook . In this chapter, students will get to learn about the electric fields, charges and their functional areas. In addition, you will also study the related laws and theorems like the Gauss’ Law. Some may find this chapter a bit difficult, but when you have Physics NCERT Class 12 PDF , comprehending and solving the questions will not be a problem.

From this chapter, questions can be asked from topics such as the calculation of force between two particles at a distance. Students will also learn why a charge appears when two materials like glass rod and silk cloth are rubbed against each other and how to calculate the dipole moment as well as the total charge of a system with an electric field and torque.

Explore Study Materials for Class 12 Chapter 1 Electric Charges and Fields

Electric Charges and Fields: Class 12 Important Questions 

Electric Charges and Fields: Class 12 Revision Notes

Electric Charges and Fields: Class 12 NCERT Exemplar Solutions Class 12

Electric Charges and Fields NEET MCQs

Electric Charges and Fields: Class 12 Important Formulas

Physics Class 12: Chapter 2 Electrostatic Potential and Capacitance

This is the second chapter in the Class 12 Physics textbook . In the second chapter, students will learn about the potential difference and the development of electrostatic potential. Moreover, this chapter consists of essential formulas and derivations, which you need to implement to solve the numerical questions.

By referring to the Class 12 Physics solutions available at Vedantu, students will gain a basic understanding of the electrostatic potential. Topics in this chapter include energy stored in a capacitor, potential energy of the system of charges and potential due to electric dipole. The solutions also include numerical problems on the effective capacitance of capacitors, solved step by step, according to the CBSE syllabus . These numerical problems, as well as concepts, are mentioned in the solutions in a simple and concise language so that students can understand everything easily and do well in their board exams.

Explore Study Materials for Class 12 Chapter 2 Electrostatic Potential and Capacitance

Electrostatic Potential and Capacitance: Class 12 Important Questions

Electrostatic Potential and Capacitance: Class 12 Revision Notes 

Electrostatic Potential and Capacitance: Class 12 Important Formulas 

Electrostatic Potential and Capacitance: Class 12 NCERT Exemplar Solutions 

Electrostatic Potential and Capacitance: NEET MCQs

Physics Class 12: Chapter 3 Current Electricity

This is the third chapter in the Class 12 Physics textbook . The chapter of Current Electricity comprises 15 topics that range from electric current to electric charge flow in varied conductors. Students are also introduced to Ohm’s law , drift velocity , resistivity , etc. You can refer to NCERT solutions to memorise and comprehend this unit.

Students will learn the definitions of keywords such as resistance , drift velocity, internal resistance, conductance, cell EMF , and resistivity in this chapter. They will also learn about resistivity graphs for semiconductors, alloys and metals. This will give them a firm grip on the concept of converting complex circuits into parallel circuits and simple series. This chapter also includes a basic explanation of the concepts of potentiometers and metre bridges. At the end of the chapter, there are several numerical problems and questions given based on the above-mentioned concepts.

Explore Study Materials for Class 12 Chapter 3 Current Electricity

Current Electricity: Class 12 Revision Notes

Current Electricity: Class 12 Important Questions

Current Electricity: Class 12 NCERT Exemplar Solutions

Current Electricity: Class 12 Important Formulas

Current Electricity: NEET MCQs

Physics Class 12: Chapter 4 Moving Charges and Magnetism

This is the fourth chapter in the Class 12 Physics textbook . This chapter discusses magnetic force and motion along a magnetic field. Magnetism is one of the most essential and critical concepts for the board exams; therefore, you need to put more focus on the same.

In this chapter, students will go through several diagrams, examples, graphs and illustrations from everyday life. This will help them retain information for a longer time. This chapter also includes the derivation of concepts like forces between two wires carrying current or Ampere’s Circuital Law. At the end of the chapter, there are numerous problems and questions given based on these concepts. These are very important and hold extra marks in the exam. Hence, students should practice these questions regularly, to get a good understanding of the chapter.

Explore Study Materials for Class 12 Chapter 4 Moving Charges and Magnetism

Moving Charges and Magnetism: Class 12 Important Questions 

Moving Charges and Magnetism: Class 12 Revision Notes 

Moving Charges and Magnetism: Class 12 NCERT Exemplar Solutions 

Moving Charges and Magnetism: Class 12 Important Formulas

Physics Class 12: Chapter 5 Magnetism and Matter

This is the fifth chapter in the Class 12 Physics textbook . This chapter makes you study magnetism in detail. But, to comprehend these concepts, you must have a clear understanding of the previous chapters. Moreover, the NCERT Physics solution can guide you to be well-accustomed to laws and mathematical derivations of the same.

In chapter 5, students will find questions on magnetic field lines, earth’s magnetism, and compass direction. Students can refer to the NCERT Class 12 Physics solutions available on Vedantu to find the answers to these questions. In addition to this, students can also learn about interstellar space, its weak magnetic field, and the magnetic moment of a solenoid.

Explore Study Materials for Class 12 Chapter 5 Magnetism and Matter

Magnetism and Matter: Class 12 Important Questions

Magnetism and Matter: Class 12 Revision Notes

Magnetism and Matter: Class 12 NCERT Exemplar Solutions  

Magnetism and Matter: Class 12 Important Formulas

Physics Class 12: Chapter 6 Electromagnetic Induction  

This is the sixth chapter in the Class 12 Physics textbook. In chapter 6, the concepts of magnetism and electricity are explained in correlation to each other. Some of the most important concepts in this chapter are Lenz’s Law and Faraday’s Law . Questions and numerical problems based on this concept are also included in this chapter for the reference of students. They should solve these questions to understand the topics efficiently. They should also keep in mind the magnetic field and the direction of induced EMF in mind while solving these questions.

Explore Study Materials for Class 12 Chapter 6 Electromagnetic Induction

Electromagnetic Induction: Class 12 Important Questions  

Electromagnetic Induction: Class 12 Revision Notes  

Electromagnetic Induction: Class 12 NCERT Exemplar Solutions  

Electromagnetic Induction: Class 12 Important Formulas

Electromagnetic Induction and Alternating Current: NEET MCQs

Physics Class 12: Chapter 7 Alternating Current

This is the seventh chapter in the Class 12 Physics textbook . This chapter is comparatively smaller than other ones, teaching about AC voltage, series LCR circuit, powers and properties of AC circuit, inductors, transformers, LC oscillations, etc.

In this chapter, students will learn about concepts such as applying AC voltage to an inductor, series LCR circuit, resistor and capacitor as well as a transformer. There are several graphs and diagrams given in the chapter, with the help of which, students can understand the concepts thoroughly. With regular practice, students will surely be equipped to solve the tough numerical problems as well as questions that are asked in the exam from this chapter. This chapter is important from the viewpoint of not only board exams but also competitive exams. Hence, if students focus on this chapter properly, they can score well in both exams.

Physics Class 12: Chapter 8 Electromagnetic Waves

This is the eighth chapter in the Class 12 Physics textbook . Electromagnetic waves are also based on the topic of magnetism, and your previous understanding will assist you in mastering this chapter. Still, if you find it difficult comprehending the same, the NCERT solutions are there for reference.

In this chapter, students will learn in detail about concepts such as electromagnetism, capacitor, potential difference and displacement. Other key concepts in this chapter include Kirchhoff’s rules , RMS value of conduction current as well as the similarities between conduction current and displacement current.

Explore Study Materials for Class 12 Chapter 8 Electromagnetic Waves

Electromagnetic Waves: Class 12 Important Questions

Electromagnetic Waves: Class 12 Revision Notes

Electromagnetic Waves: Class 12 NCERT Exemplar Solutions

Electromagnetic Waves: Class 12 Important Formulas

Physics Class 12: Chapter 9, 10 Ray Optics and Optical Instruments and Wave Optics

These two chapters are the ninth and tenth in the Class 12 Physics textbook . These two chapters are equally crucial for boards as the earlier ones. The first one deals with the concepts of reflection and refraction, and the second one involves Huygens’s Principle, Polarisation, Young’s experiment, etc.

In chapter 9, students study reflection, refraction as well as dispersion of light with the help of ray pictures. This chapter thoroughly explains image generation using the laws of refraction and reflection. The construction as well as the working of several optical instruments, including the human eye, is also addressed in this chapter. The natural phenomena occurring due to sunlight is another key concept in this chapter that students should study.

In chapter 10, the most important concept is Huygen’s laws of reflection and refraction. This topic has the highest weightage of marks from this chapter. Other concepts in this chapter include Brewster’s Law, Doppler Effect and angular width expression. These are discussed along with appropriate examples for the understanding of students. It is recommended that students go through all the derivations and theories in this chapter as well as solve all the numerical problems and questions of this chapter.

Explore Study Materials for Class 12: Chapter 9, 10 Ray Optics and Optical Instruments and Wave Optics

Ray Optics and Optical Instruments: Class 12 Important Questions  

Ray Optics and Optical Instruments: Class 12 Revision Notes  

Ray Optics and Optical Instruments: Class 12 NCERT Exemplar Solutions

Ray Optics and Optical Instruments: Class 12 Important Formulas

Ray Optics and Optical Instruments: NEET MCQs

Wave Optics: Class 12 Important Questions

Wave Optics: Class 12 Revision Notes

Wave Optics: Class 12 NCERT Exemplar Solutions

Wave Optics: Class 12 Important Formulas

Wave Optics: NEET MCQs

Physics Class 12: Chapter 11 Dual Nature of Radiation and Matter

This is the eleventh chapter in the Class 12 Physics textbook . Here, you will get to know whether radiation is similar to a particle, wave or both in property and appearance. In addition, it also consists of concepts like photoelectric effects, Wave theory, Wave nature, etc.

Important topics such as the photoelectric effect, Einstein’s Photoelectric equation, electron emission, the wave aspect of matter and experimental effect are discussed in this chapter. Students should pay more attention to the numerical problems from this chapter. They should keep in mind that most questions in their Class 12 Physics board exam will be asked from the NCERT Physics textbook . Hence, they should go through all the chapters and solve all the questions from the textbook. This is the key to scoring good marks in the exam.

Explore Study Materials for Class 12 Chapter 11 Dual Nature of Radiation and Matter

Dual Nature of Radiation and Matter: Class 12 Important Questions  

Dual Nature of Radiation and Matter: Class 12 Revision Notes  

Dual Nature of Radiation and Matter: Class 12 NCERT Exemplar Solutions  

Dual Nature of Radiation and Matter: Class 12 Important Formulas

Dual Nature of Radiation and Matter: NEET MCQs

Physics Class 12: Chapter 12, 13 Atoms and Nuclei

These two chapters are the twelfth and thirteenth in the Class 12 Physics textbook . By going through these chapters, you will get introduced to the basic structure of our surroundings, nuclear energy, radioactivity, etc.

In chapter 12, one of the most important concepts is the Bohr Model of Hydrogen Atom. Students should make sure to learn all the important formulas and concepts in this chapter. When solving numerical problems, ensure that all the steps are shown in the answer. This is because, according to the CBSE marking scheme , students will receive marks for the steps shown in answer to numerical problems, even if their answer is incorrect.

Chapter 13 discusses concepts such as nucleus composition, mass-energy, nuclear force, nuclear energy, atomic masses, nucleus size, nuclear binding energy, and radioactivity. Making notes and a separate formula and definitions notebook is one of the best ways to prepare for the Class 12 Physics board exam . Every topic in the Physics Class 12 syllabus is essential, as questions in the competitive exams and the board exam will be asked from the same.

Explore Study Materials for Class 12 Chapter 12, 13 Atoms and Nuclei

Atoms: Class 12 Important Questions

Atoms: Class 12 Revision Notes

Atoms: Class 12 NCERT Exemplar Solutions

Atoms: Class 12 Important Formulas

Nuclei: Class 12 Important Questions

Nuclei: Class 12 Revision Notes

Nuclei: Class 12 NCERT Exemplar Solutions

Nuclei: Class 12 Important Formulas

Physics Class 12: Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits

This is the fourteenth chapter in the Class 12 Physics textbook . This unit deals with semiconductors, their types, insulators and their applications. It is one of the most scoring chapters in Class 12 exams.

Most questions from this chapter will be based on the concepts of n-type semiconductors, dopants and carries. True or false type questions about topics including germanium, carbon and silicon semiconductors may also be asked from this chapter in the exam. The method to determine the energy gap is another key concept in this chapter. Students should learn how to determine the output frequency of a half-wave as well as a full-wave rectifier thoroughly, as questions will be asked on this topic. This chapter contains several extra exercises that have questions on finding the number of electrons and holes in the atoms of arsenic, indium and silicon.

Explore Study Materials for Class 12 Chapter 14 Semiconductor Electronics: Devices, Materials and Simple Circuits

Semiconductor Electronics: Class 12 Important Questions  

Semiconductor Electronics: Class 12 Revision Notes  

Semiconductor Electronics: Class 12 NCERT Exemplar Solutions

Electronic Devices: NEET MCQs

Physics Class 12: Chapter 15 Communication System

This is the fifteenth chapter in the Class 12 Physics textbook . The last chapter will give you detailed information about communication systems and their elements.

Explore Study Materials for Class 12 Chapter 15 Communication System

Communication Systems: Class 12 Important Questions

Communication Systems: Class 12 Revision Notes

Communication Systems: Class 12 NCERT Exemplar Solutions

Class 12 Physics Exam: Marks Weightage  

Central Board of Secondary Education (CBSE) has given a complete syllabus for the academic year 2023-24. CBSE has made this alteration to provide deep knowledge about all the topics of the syllabus. This will help students to improve their logical and analytical skills. The below table gives you the complete weightage of each topic in detail. 

CBSE Class 12 Physics Syllabus and Weightage 

Learn the Smart Way with Vedantu’s Latest NCERT Solutions for Class 12 Physics!

At Vedantu, students can find carefully compiled keynotes for each chapter, along with the important formulas and concepts. They can also refer to the latest NCERT Solutions for Class 12 Physics provided by Vedantu, as several queries that students may have are addressed in it. The keynotes and solutions have been compiled after extensive research and input from experts on the subject, making it one of the most reliable study materials amongst other online resources and solutions. Students will find a step-by-step explanation of each concept, numerical problem and derivations given in the textbook in the Vedantu NCERT Class 12 Physics solutions.

NCERT Solutions for Class 12 Books

NCERT Solutions for Class 12 Maths

NCERT Solutions for Class 12 Chemistry

NCERT Solutions for Class 12 Biology

NCERT Solutions for Class 12 English

NCERT Solutions for Class 12 Business Studies

NCERT Solutions for Class 12 Economics

NCERT Solutions for Class 12 Accountancy

Along with this, students can also download additional study materials provided by Vedantu, for CBSE Class 12 Physics -

Class 12: Important Questions

Class 12: Revision Notes

Class 12: NCERT Exemplar Solutions

CBSE Class 12 Physics NCERT Solutions 2023-24 - Salient Features of the NCERT Solutions 

Cbse class 12 physics ncert solutions 2023-24 consist of useful study features which will help the students in numerous ways. the salient features of the ncert study are as follows:.

Answers to all numerical problems in the textbook are given with a step-by-step explanation.

Free unlimited downloads.

Extensively detailed answers to all theoretical as well as logical reasoning questions from the NCERT Physics textbook of Class 12 that are verified by several experts of the subject.

For their ease, students can bookmark this link in their browser, so that they can quickly access the Class 12 Physics NCERT Solutions whenever they want.

CBSE Class 12 Physics NCERT Solutions 2023-24 - Advantages of NCERT Solutions

Following are some advantages of preparing from NCERT solutions:

Simple and accurate answers.

Curated by reputed scholars. 

Covers all the complex and straightforward topics.

Therefore, with the help of the Physics Class 12 NCERT Solutions PDF study material offered by Vedantu, you can stay assured to score remarkably in the board exams.

CBSE Class 12 Physics NCERT Solutions 2023-24 - Topper’s Favourite!

When it comes to NCERT solutions, Vedantu is the first choice for many CBSE students, owing to the precision and authenticity of the solutions. We make sure that the solutions are accurate and every student can benefit from them. Students can easily complete their Class 12 Physics syllabus with the help of the solutions provided by Vedantu. Here are some of the key features of the NCERT solutions we provide –

Provision of Several Types of Questions and Numerical Problems - All of us have heard the saying that “Practice makes a man perfect.” This is also applicable to the students of Class 12. Practising what they’ve learnt is the only way to score exceptional marks in the board exams. This not only enables them to identify weak and strong areas but also reduces their exam anxiety. At Vedantu, students will find chapter-by-chapter solutions. They can utilise these solutions online as well as offline.

Solutions Made by Highly Qualified Subject Experts - At Vedantu, we have highly qualified subject matter experts. They know how to convey the information succinctly. They make sure that the solutions are designed in such a way that students of Class 12 can easily understand and grasp everything. All the solutions are prepared according to CBSE’s board exam pattern, making them dependable and exam-friendly.

Accessible Any Time, Anywhere - Class 12 is a crucial milestone in every student’s life, which is why selecting the best study material for their preparation is critical. At Vedantu, we aim to instil a sense of confidence in students. Hence, we have developed the Class 12 NCERT Physics solutions in such a way that every query that a student might have is answered in them. Students can download the pdf format of our solutions and refer to it anytime, anywhere.

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NCERT Solutions for Class 12 CBSE 2023-24 - Free PDF  

Important Questions for CBSE Class 12 - Free PDF Download  

Revision Notes for Class 12 CBSE 2023-24 - Free PDF  

CBSE Class 12 All Subjects Term Wise Syllabus 2023-24  

CBSE Previous Year Question Papers Class 12 PDF Solutions (2022-23)  

Learn important formulas of CBSE Class 12 Maths of all chapters  

This study was basically an informative article on CBSE Class 12 Physics NCERT Solutions 2023-24. Here the students are required to download the free study material provided by us and use the best of it during the preparation for their CBSE Class 12 Physics examination. 

We have shared the chapter briefs of the Physics CBSE Class 12 syllabus. Enjoy the free study material and all the best for your CBSE Class 12 Physics exam!

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FAQs on NCERT Solutions For class 12 Physics

1. How to Achieve Full Marks in Class 12 Physics Exam?

In order to ace the class 12 Physics exam , students are required to have a conceptual understanding of the entire subject matter. Though all the chapters are equally important, and you should not leave any particular section from your syllabus, there are some sections which you should emphasise on.

A substantial number of questions come from Chapters like Magnetism , Electrostatics , Optics , Communication systems , Semiconductors and Electronic Devices, etc. Students must also note down all the essential formulae, derivations and constant physical values; these will come handy during the revision before the exam. Moreover, you should follow the NCERT books to cover the whole Physics syllabus.

2. How Many Chapters are There in Physics Class 12 NCERT Book? Also, Write the Names.

In total there are 15 chapters in the NCERT book of class 12 Physics . The names are:

Electric Charges and Fields

Electrostatic Potential and Capacitance

Current Electricity

Moving Charges and Magnetism

Magnetism and Matter

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Ray Optics and Optical Instruments

Wave Optics

 Dual Nature of Radiation and Matter

Semiconductor Electronics Devices, Materials and Simple Circuits

Communication systems.

3. What will a Student Learn in the First Laws of Motion?

The first laws of motion deal with force types, free body diagrams, Newton’s motion laws , equilibrium , constraint equations, pulleys, friction and pseudo force. Moreover, in this topic, students will get to learn about the three motion laws and the relationship between forces acting on the body and motion of the body.

Students will also get an idea about the conservation of momentum along with both initial and final velocity. This topic includes the different collision types, and linear motions like uniform and non-uniform linear motion , including the vector quantities. It is an important chapter that requires a thorough understanding.

4. Can I study from the NCERT Solutions for Class 12 Physics for the exam preparation?

NCERT Solutions for Class 12 Physics are given in detail on Vedantu Website and the app. All solutions are prepared by experts in easy to understand language. Students can refer to the NCERT Solutions for an easy understanding of the concepts given in Class 12 Physics. If students read the chapter from the NCERT textbook and then check the solutions, they can do better preparation for their exams.

5. What are the lessons in Class 12 Physics?

Lessons in Class 12 Physics include the following:

Chapter 1: Electric Charges And Fields

Chapter 2: Electrostatic Potential And Capacitance

Chapter 3: Current Electricity

Chapter 4: Moving Charges and Magnetism

Chapter 5: Magnetism and Matter

Chapter 6: Electromagnetic Induction

Chapter 7: Alternating Current

Chapter 8: Electromagnetic Waves

Chapter 9: Ray Optics and Optical Instruments

Chapter 10: Wave Optics

Dual Nature of Radiation and Matter

Chapter 12: Atoms

Chapter 13: Nuclei

Chapter 14: Semiconductor Electronics

Chapter 15: Communication Systems

6. Is Physics of Class 12 difficult?

Class 12 Physics is a vast subject. It includes a wide range of topics and derivations. But, if students study consistently and pay attention to the basic concepts they can score good marks in Physics Class 12 . They should read each chapter attentively and should try to understand the concepts. They have to make a study plan for solving derivations as most chapters have derivations and can help score better.

7. Which is the most important chapter in Class 12 Physics?

All chapters in Class 12 Physics are important. Students should understand the concepts in Physics for getting good marks in exams and for entrance exam preparation. Students can download NCERT Solutions Class 12 Physics from the Vedantu website free of cost. NCERT Solutions Class 12 Physics can help students in understanding the concepts and scoring good marks. They can download PDF files and save them on their computer to refer to anytime for exam preparation.

8. Are Vedantu’s NCERT Solutions for Class 12 Physics free of cost and how to download the NCERT solutions?

Yes, Vedantu’s NCERT Solutions for Class 12 Physics are available free of cost. They need to follow the below steps to download Vedantu’s NCERT Solutions for Class 12 Physics

Visit the page-NCERT Solutions for Class 12 Physics. 

Click on NCERT Solutions for Class 12 Physics. 

Click on the chapter for which you want the solutions. 

Click on the option download pdf. 

Students can save these solutions free of cost on their computers and can refer to them offline. 

NCERT Solutions for Class 12

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Class 12 Physics NCERT chapter-wise solution [pdf]

On this page, you will find links to our posts providing Class 12 Physics NCERT chapter-wise solutions . The solutions to the numerical problems and other questions given in the exercises should help students of CBSE, ISC, and other state boards of HS education. The solutions are given in PDF files.

NCERT Class 12 physics chapters solution series

NCERT Class 12 physics chapter 1 solution

NCERT Class 12 physics chapter 2 solution

NCERT Class 12 physics chapter 3 solution

NCERT Class 12 physics chapter 4 solution

NCERT Class 12 physics chapter 5 solution

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  • Class 12th physics chapter 2 (Potential and Capacitance) solution
  • Class 12th physics chapter 3 (Current Electricity) solution
  • Class 12th physics chapter 5 (Magnetism and Matter) solution
  • Class 12th physics chapter 4 (Moving Charges and Magnetism) solution

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Class 12 Physics Worksheets

We have provided below free printable  Class 12 Physics Worksheets  for Download in PDF. The worksheets have been designed based on the latest  NCERT Book for Class 12 Physics . These  Worksheets for Grade 12 Physics  cover all important topics which can come in your standard 12 tests and examinations.  Free printable worksheets for CBSE Class 12 Physics , school and class assignments, and practice test papers have been designed by our highly experienced class 12 faculty. You can free download CBSE NCERT printable worksheets for Physics Class 12 with solutions and answers. All worksheets and test sheets have been prepared by expert teachers as per the latest Syllabus in Physics Class 12. Students can click on the links below and download all Pdf  worksheets for Physics class 12  for free. All latest Kendriya Vidyalaya  Class 12 Physics Worksheets  with Answers and test papers are given below.

Physics Class 12 Worksheets Pdf Download

Here we have the biggest database of free  CBSE NCERT KVS  Worksheets for Class 12  Physics . You can download all free Physics worksheets in Pdf for standard 12th. Our teachers have covered  Class 12 important questions and answers  for Physics as per the latest curriculum for the current academic year. All test sheets question banks for Class 12 Physics and  CBSE Worksheets for Physics  Class 12  will be really useful for Class 12 students to properly prepare for the upcoming tests and examinations. Class 12th students are advised to free download in Pdf all printable workbooks given below.

Topicwise Worksheets for Class 12 Physics Download in Pdf

Class 12 Physics Worksheets

Advantages of Solving Class 12 Physics Worksheets

  • As we have the best collection of Physics worksheets for Grade 12, you will be able to find important questions which will come in your class tests and examinations.
  • You will be able to revise all important and difficult topics given in your CBSE Physics  textbooks for Class 12 .
  • All Physics worksheets for standard 12 have been provided with solutions. You will be able to solve them yourself and them compare with the answers provided by our teachers.
  • Class 12 Students studying in per CBSE, NCERT and KVS schools will be able to free download all Physics chapter wise assgnments and worksheets for free in Pdf
  • Class 12 Physics Workbook will help to enhance and improve subject knowledge which will help to get more marks in exams

Frequently Asked Questions by Class 12 Physics students

At https://www.cbsencertsolutions.com, we have provided the biggest database of free worksheets for Physics Class 12 which you can download in Pdf

We provide here Standard 12 Physics chapter-wise worksheets which can be easily downloaded in Pdf format for free.

You can click on the links above and get worksheets for Physics in Grade 12, all topic-wise question banks with solutions have been provided here. You can click on the links to download in Pdf.

We have provided here subject-wise Physics Grade 12 question banks, revision notes and questions for all difficult topics, and other study material.

We have provided the best quality question bank for Class 12 for all subjects. You can download them all and use them offline without the internet.

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NCERT Solutions For Class 12 Physics, Subject wise PDF

NCERT Solutions For Class 12 Physics: Download NCERT Solutions for Class 12 Physics chapter wise PDF for the year 2023-24 solved by Physics Wallah Teachers.

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February 9, 2024

NCERT Solutions For Class 12 Physics

Table of Contents

The NCERT Solutions For Class 12 Physics  designed for serve as valuable educational tools that enhance one’s comprehension of Physics. Within the realm of Class 12, there exist 15 pivotal chapters that play a foundational role in fostering a robust understanding of Physics.

These chapters encompass a wide spectrum of topics, from Electric Charges and Fields to Electrostatic Potential and Capacitance, as well as Current Electricity and beyond. As one explores these chapters, an enduring foundation for comprehending Physics is constructed, yielding benefits that extend into future academic pursuits.

The significance of mastering these concepts becomes particularly pronounced when one contemplates a career in Physics. Attaining excellence in Class 12 Physics is a testament to one’s readiness for delving into more advanced levels of study. The  NCERT solutions tailored for Class 12 Physics  are poised to aid individuals in achieving proficiency in the subject matter, even when grappling with seemingly intricate concepts.

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Deploying these meticulously crafted NCERT Solutions renders assimilating Class 12 Physics concepts an accessible endeavor. In addition, we provide facile access to NCERT Solutions corresponding to various subjects such as Biology, Mathematics, Hindi, and English, effectively ensuring their availability to students whenever the need arises.

NCERT Solutions For Class 12 Physics  Overview

NCERT Solutions for Class 12 Physics covers these important topics. Students are advised to thoroughly review each topic in order to completely understand the ideas covered in the chapter and make good use of the offered solutions.

These solutions are a result of the teachers at Physics Wallah working hard to improve students’ understanding of the concepts covered in the chapter. After going over and rehearsing these answers, the goal is for students to easily score high exam results.

NCERT Solutions For Class 12 Physics PDF

To help students understand and practise chapter topics, our team of experts at Physics Wallah has developed thorough solutions for NCERT Class 12 Physics. The purpose of these questions is to make explanations easier to understand for students.

You can use the following link to download the NCERT Solutions for Class 12 Physics, PDF:

NCERT Solutions Class 12 Physics Download Link

NCERT Solutions for Class 12 Physics Chapter-wise List

Students can find the NCERT Solutions for Class 12 Physics arranged by chapter. The Physics Wallah team of experts has carefully created these detailed solutions. Dive into these explanations provided for each chapter to enhance your understanding of the concepts.

NCERT Solutions for Class 12 Physics Chapter 1- Electric Charges and Fields

In NCERT Solutions for class 12 Physics Chapter 1 , you’ll delve into the calculation of forces between charged particles placed at a distance from each other. The phenomenon of charge generation through rubbing materials together, like silk cloth and a glass rod, will be explored. The concept of quantization of charges in large-scale scenarios will be examined. Moreover, you’ll encounter questions related to total charge determination, dipole moment, torque, and electric fields.

CBSE Sample paper Class 12

NCERT Solutions for Class 12 Physics Chapter 2 – Electrostatic Potential and Capacitance

NCERT Solutions for class 12 Physics Chapter 2  introduces the concept of electrostatic potential, covering topics such as the potential energy of charge systems, capacitor energy storage, and electric dipole potential. Additionally, problems involving the effective capacitance of capacitors will be addressed, ensuring a clear understanding for students. Concepts are presented straightforwardly to aid performance in board exams.

NCERT Solutions for Class 12 Physics Chapter 3 – Current Electricity

NCERT Solutions for class 12 Physics Chapter 3 , the definitions of key terms like conductance, resistance, EMF of cells, drift velocity, resistivity, and internal resistance will be covered in this chapter. Students will learn about resistivity graphs for different materials and the conversion of complex circuits into simpler ones. Various circuit elements, such as the meter bridge and potentiometer, will also be explained, followed by practice problems.

NCERT Solutions for Class 12 Physics Chapter 4 – Moving Charges and Magnetism

NCERT Solutions for class 12 Physics Chapter 4  focuses on magnetic field concepts, Ampere’s Circuital law, and interactions between current-carrying wires. Derivations and practical examples, along with daily-life illustrations, will aid understanding. Students will solve problems involving these concepts to reinforce their grasp of the material.

NCERT Solutions for Class 12 Physics Chapter 5 – Magnetism and Matter

NCERT Solutions for class 12 Physics Chapter 5  delves into magnetic phenomena by exploring the magnetic field of Earth, compass behavior, and the variation of Earth’s magnetic field in space. The magnetic moment of a solenoid, the magnetic dipole moment, and the properties of magnetic substances will be discussed. The chapter also covers electromagnets and their strengths and permanent magnets.

NCERT Solutions for Class 12 Physics Chapter 6 – Electromagnetic Induction

NCERT Solutions for class 12 Physics Chapter 6  combines electricity and magnetism, focusing on Faraday’s and Lenz’s laws. The concepts are presented systematically, aiding students in solving problems related to induced EMF and magnetic fields’ directions. Self and mutual inductance will also be covered, offering a comprehensive understanding of electromagnetic induction.

NCERT Solutions for Class 12 Physics Chapter 7 – Alternating Current

NCERT Solutions for class 12 Physics Chapter 7  explores AC voltage in relation to components like resistors, inductors, capacitors, and series LCR circuits. The use of diagrams and graphs enhances comprehension. Regular study of this chapter equips students to tackle intricate questions and problems encountered in board exams. Notably, the chapter focuses on transformers, a pivotal concept for board exams and competitive assessments.

NCERT Solutions for Class 12 Physics Chapter 8 – Electromagnetic Waves

NCERT Solutions for class 12 Physics Chapter 8 , the Embracing the interplay of electricity and magnetism, this chapter delves into phenomena such as refraction, reflection, and dispersion of light through a ray-based approach. Laws of reflection and refraction form the basis for image formation, and the workings of electromagnetic waves are also covered. Knowledge of Kirchhoff’s rules enhances performance in board exams. Additionally, the chapter sheds light on RMS values of conduction currents and the parallels between displacement and conduction currents.

NCERT Solutions for Class 12 Physics Chapter 9 – Ray Optics and Optical Instruments

NCERT Solutions for class 12 Physics Chapter 9  delves into the principles of light phenomena like reflection, refraction, and dispersion, elucidating them through ray optics. Laws of reflection and refraction contribute to image creation, and the construction and functions of optical instruments, including the human eye, are detailed. The chapter also explores natural occurrences influenced by sunlight, which hold significance in exams.

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NCERT Solutions for Class 12 Physics Chapter 10 – Wave Optics

NCERT Solutions for class 12 Physics Chapter 10 , Wave optics introduces the wavefront concept and Huygens’ principle, progressing to interference, Young’s double-slit experiment, and diffraction. This chapter also touches on microscopes and telescopes’ resolving power and explores phenomena such as polarization and Brewster’s law. Problem-solving, both theoretical and numerical, is key to mastering this chapter.

NCERT Solutions for Class 12 Physics Chapter 11 – Dual Nature of Radiation and Matter

NCERT Solutions for class 12 Physics Chapter 11 delves into the duality of radiation and matter, encompassing electron emission, the photoelectric effect, de Broglie waves, and the wave nature of particles. With Einstein’s photoelectric equation and the Davisson-Germer experiment in focus, this chapter bridges the gap between classical and quantum physics. Regular practice of numerical problems aids in conceptual mastery.

NCERT Solutions for Class 12 Physics Chapter 12 – Atoms

NCERT Solutions for class 12 Physics Chapter 12 introduces the Bohr Model of the hydrogen atom, exploring alpha-particle scattering experiments, Rutherford’s atom model, and energy levels. This chapter lays the foundation for understanding atomic structures and their behavior, laying the groundwork for more advanced quantum concepts. Practice and memorization of key formulas are instrumental for success.

Consistent study and practice of the concepts covered in these chapters will prepare students for their board exams and foster a deeper understanding of the fundamental principles of physics.

NCERT Solutions for Class 12 Physics Chapter 13 – Nuclei

NCERT Solutions for class 12 Physics Chapter 13 delves into key nuclear concepts, including atomic composition, nucleus size, isotopes, isobars, and isotones. The exploration of radioactivity encompasses alpha, beta, and gamma particles/rays, along with their properties and decay law. Other vital topics include mass-energy relationships, the binding energy per nucleon, and its variations with mass numbers. Nuclear fission and fusion are also covered, emphasizing their significance in the context of nuclear energy.

NCERT Solutions for Class 12 Physics Chapter 14 – Semiconductor Electronics: Materials, Devices, and Simple Circuits

NCERT Solutions for class 12 Physics Chapter 14 focuses on semiconductor electronics, with key topics such as n-type semiconductors, carriers, and dopants. The chapter covers true or false questions about semiconductors composed of carbon, silicon, and germanium and the method of determining energy gaps. Notably, the analysis extends to output frequency determination in half-wave and full-wave rectifiers. Questions about output signal in series-connected amplifiers are discussed alongside exercises involving atom calculations for indium, silicon, and arsenic.

NCERT Solutions for Class 12 Physics Chapter 15 – Communication Systems

NCERT Solutions for class 12 Physics Chapter 15 , the communication Systems encompass the realms of connection, transmission, interconnection, and communication. The systems are organized into three types—Media, Technology, and Application Area—and involve modern components like transducers, sensors, amplifiers, and emitters. This chapter underscores the significance of referring to top-quality online study materials for a thorough grasp of these complex concepts.

Benefits of NCERT Solutions for Class 12 Physics

NCERT Solutions for Class 12 Physics offers a range of benefits that greatly aid students’ learning process and academic performance. Here are the key advantages:

  • Accurate and Verified Solutions:  These solutions are crafted by subject-matter experts, ensuring their accuracy and alignment with the official curriculum. Students can rely on these solutions to provide correct answers and explanations.
  • Comprehensive Coverage:  The NCERT Solutions encompass all the subjects and principles of the Class 12 Physics curriculum. This thorough inclusiveness guarantees that students do not overlook crucial material while preparing for examinations.
  • Concept Clarity:  The solutions provide clear explanations for complex physics concepts. This clarity helps students understand the underlying principles and theories, making grasping and remembering difficult topics easier.
  • Step-by-Step Guidance:  Each solution is presented in a step-by-step manner. This approach guides students through problem-solving, helping them understand the logical progression of solving physics problems.
  • Practice Material:  NCERT Solutions offer many practice questions and exercises. Regular practice with these questions helps students reinforce their understanding, improve problem-solving skills, and become more confident in their abilities.
  • Exam Preparation:  The solutions are crafted to assist students in exam preparation. By solving questions that resemble those found in exams, students become accustomed to the question formats and are more adept at managing their time during the examination.
  • Self-Assessment : Students can use the solutions for self-assessment. After attempting a problem, they can cross-check their answers with the provided solutions to identify areas where they might need further practice or improvement.

Preparation Tips for Class 12 Physics

Preparing for Class 12 Physics can be rewarding with the right strategies and approaches. Below are a few valuable study tips to enhance your academic performance:

  • Understand the Basics:  Begin by getting the hang of the main ideas in each chapter. Make a solid base by understanding the simple rules before learning harder stuff.
  • Organize a Study Schedule:  Create a well-structured study plan that allocates time for each chapter based on its weightage and your understanding of the content. A balanced schedule helps prevent last-minute cramming and reduces stress.
  • Break Down Complex Topics:  Break tough subjects into smaller, easier-to-handle pieces. Understand each part before trying to get the whole picture. This way of learning makes it feel less scary.
  • Practice Regularly:  To get good at Physics, you must practice solving problems. Try different problems from your books, old question papers, and other sources. Doing this a lot will make you much better at solving problems.
  • Use NCERT Solutions:  Refer to NCERT Solutions for Class 12 Physics to understand the correct problem-solving approach. They offer step-by-step solutions that clarify doubts and provide insights into solving different problems.
  • Take Notes:  When learning, write short and neat notes. Put important formulas, meanings, and ideas on paper. Looking at these notes again will help you remember things better.
  • Practice Diagrams:  Physics often involves visual representation through diagrams. Practice drawing accurate diagrams and labeling important components. Clear diagrams can enhance your answers and understanding.
  • Solve Sample Papers:  Try doing practice papers and questions from past years to prepare for the test. This way, you will know how the questions are usually asked and how to use your time well during the real exam.
  • Focus on Numerical Problems:  Physics includes many numerical problems. Focus on understanding the underlying principles and formulas behind these problems. Practice different variations to improve your numerical-solving skills.
  • Stay Updated with Formulas:  Create a formula sheet or flashcards with all the important formulas. Regularly review and practice using these formulas to ensure they stay fresh in your memory.

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Why Physics Wallah is Best for NCERT Solutions for Class 12 Physics

Physics Wallah stands out as a premier resource for Class 12 Physics NCERT Solutions, driven by a range of compelling factors:

  • Tailored Support:  Physics Wallah is dedicated to aiding students in achieving excellence by providing customized solutions that cater to individual learning needs.
  • In-Depth Insight:  The NCERT solutions provided by Physics Wallah extensively cover all Class 12 Physics topics, fostering a comprehensive understanding of the subject matter.
  • Credibility:  Physics Wallah credibility is reinforced by endorsements from successful students, showcasing the platform’s reliability and effectiveness.
  • Focus on Crucial Concepts:  Physics Wallah significantly emphasizes essential questions, equipping students with the tools to concentrate on critical concepts crucial for exams.
  • User-Friendly Format : Physics Wallah presents solutions in user-friendly PDF formats, ensuring effortless access and easy sharing across different devices.
  • Versatility:  These solutions accommodate diverse learning preferences, making them compatible with smartphones, tablets, and laptops.

Physics Wallah has established itself as a trustworthy educational platform renowned for its outstanding academic offerings. This reputation highlights the platform’s reliability and credibility within the realm of education.

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NCERT Solutions for Class 12 Physics FAQs

Ans. NCERT Solutions for Class 12 Physics are detailed explanations and answers to the questions provided in the NCERT Physics textbook for Class 12. These are made to help students understand hard ideas, solve problems, and get ready for tests in a good way.

Ans. NCERT Solutions provide step-by-step solutions to textbook questions, offering clarity on challenging topics. They help students practice different types of questions, enhance problem-solving skills, and build a strong foundation in Physics.

Ans. NCERT Solutions are tailored to the NCERT textbook, the primary reference for board exams. By solving questions from these solutions, you become familiar with the exam pattern, types of questions, and the correct approach.

Ans. While NCERT Solutions are excellent for understanding the basics, it's recommended to supplement your preparation with additional study resources like reference books, practice papers, and online tutorials to gain a deeper insight into complex topics.

Ans. Begin by reading the chapter in your NCERT textbook. After that, try answering the questions by yourself before looking at the answers. Check your answers with the given solutions to find out where you can do better and fix any mistakes you made.

NCERT Solutions For Class 12 Physics Chapter 15 Communications System

NCERT Solutions For Class 12 Physics Chapter 13 Nuclei

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NCERT Solutions for Class 12 Physics Chapter 1 Free PDF Download

Ncert solutions for class 12 physics chapter 1 electric charges and fields.

This article deals with NCERT Solutions for Class 12 Physics Chapter 1. Physics is certainly a complicated branch of science. However, NCERT Solutions makes this subject pretty easy. Most noteworthy, these solutions clear all fundamental concepts. Hence, the details of Physics become crystal clear for those who learn from NCERT Solutions

physics solved problems class 12 pdf

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CBSE Class 12 Physics Chapter 1 – Electric Charges and Fields NCERT Solutions

NCERT Solutions for Class 12 Physics Chapter 1 deals with Electric Charges and Fields. This chapter deals with electricity, charge, and discharge. Moreover, it deals with the generation of static electricity. There is certainly a discussion of the various components of electrostatics here.

Subtopics covered under NCERT Solutions for Class 12 Physics Chapter 1

1.1 Introduction

1.2 Electric Charge

1.3 Conductors and Insulators

1.4 Charging by Induction

1.5 Basic Properties of Electric Charge

  • 1.5.1 Additivity of charges
  • 1.5.2 Charge is conserved
  • 1.5.3 Quantisation of charge

1.6 Coulomb’s Law

1.7 Forces between Multiple Charges

1.8 Electric Field

  • 1.8.1 Electric field due to a system of charges
  • 1.8.2 Physical significance of electric field

1.9 Electric Field Lines

1.10 Electric Flux

1.11Electric Dipole

  • 1.11.1 The field of an electric dipole
  • 1.11.2 Physical significance of dipoles

1.12 Dipole in a Uniform External Field

1.13 Continuous Charge Distribution

1.14 Gauss’s Law

1.15 Applications of Gauss’s Law

  • 1.15.1 Field due to an infinitely long straight uniformly charged wire
  • 1.15.2 Field due to a uniformly charged infinite plane sheet
  • 1.15.3 Field due to a uniformly charged thin spherical shell

NCERT Solutions for Class 12 Physics Chapter 1

First of all, this is a vital part of Physics. Moreover, it has applications in a number of fields of science. Furthermore, the chapter will help students in becoming engineers and architects. This is due to the huge application of electricity and related concepts in these fields.

Below is a brief explanation of the sub-units of chapter 1:

1.1 Introduction –

First of all, this part gives a general idea of Electric Charges and Fields. This sub-unit certainly gives a general introduction to the chapter.

1.2 Electric Charge –

This refers to the physical property of matter that causes it to experience a force. Moreover, it happens when the matter is placed in an electromagnetic field.

1.3 Conductors and Insulators –

Conductors are substances which allow electricity to pass through them easily. In contrast, insulators are those which offer high resistance to the passage of electricity.

1.4 Charging by Induction –

This is certainly a process. Most noteworthy, in this process, metal spheres will each be equal and oppositely charged.

1.5 Basic Properties of Electric Charge –

This part certainly discusses the basic properties of electric charge. Furthermore, the minor units here are:

1.6 Coulomb’s Law –

This refers to a quantitative statement about the force between two point charges.

1.7 Forces between Multiple Charges –

This part provides information on the forces between multiple charges.

1.8 Electric Field –

This can be defined as the electric force per unit charge. The minor parts here are:

1.9 Electric Field Lines –

Electric field lines certainly provide a means to visualize the electric field.

1.10 Electric Flux –

This is an analogous quantity in the case of the electric field.

1.11Electric Dipole –

This refers to a pair of equal and opposite point charges q and –q. Furthermore, this is separated by a distance 2a. The minor units here are below:

1.12 Dipole in a Uniform External Field –

This part certainly deals with a dipole in a uniform external field.

1.13 Continuous Charge Distribution –

The continuous charge distribution is pretty similar to that we adopt for continuous mass distribution.

1.14 Gauss’s Law –

This law tells that the total electric flux through a closed surface is zero. Furthermore, it happens if no charge is enclosed by the surface.

1.15 Applications of Gauss’s Law –

This part certainly contains applications of Gauss’s Law. It has the following parts:

You can download NCERT Solutions for Class 12 Physics Chapter 1 PDF by clicking on the button below.

NCERT Solutions for Class 12 Physics Chapter 1

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Solved Questions For You:

Question 1.  There two types of electric charges positive charges and negative charges. The property which differentiates the two types of charges is:

Question 2. What will happen when we rub a glass rod with silk cloth?

Question 3. When a person combs his hair, static electricity is generated sometimes by what process?

Question 4.  A method for charging a conductor without bringing a charged body in contact with it is called:

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NCERT Solutions for Class 12

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If you are looking for the fastest method to get the 100% accurate Physics answers of class 12 then you need a well prepared NCERT Solutions for Class 12 Physics. The well prepared NCERT Class 12 Physics Solutions are those which contain easy to understand step-by-step answers. For your convenience, our team of Subject Matter experts have prepared the NCERT Solutions for Class 12 Physics referring to the Class 12 NCERT Physics Textbooks and Syllabus.

Links to access the Class 12 NCERT Physics Solutions PDF are given here on this page for free of cost.

Chapter Wise NCERT Solutions for Class 12 Physics in PDF

Every single lesson that you see in the NCERT Class 12 Physics book is solved in the NCERT Class 12 Physics Solutions that we provide here. Using the Chapter wise NCERT Solutions for Class 12 Physics in PDF, you get a chance to cover the complete chapter’s end questions without any external help.

Not only this, but using the chapter wise Physics Solutions of class 12 PDF helps you build confidence and boost your learning skills too. NCERT Solutions for Class 12 Physics PDF is given below in chapter wise manner, make sure you use them to start understanding the Physics topics better to score better marks in the examination.

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields

Ncert solutions for class 12 physics chapter 2 electrostatic potential and capacitance, ncert solutions for class 12 physics chapter 3 current electricity, ncert solutions for class 12 physics chapter 4 moving charges and magnetism, ncert solutions for class 12 physics chapter 5 magnetism and matter, ncert solutions for class 12 physics chapter 6 electromagnetic induction, ncert solutions for class 12 physics chapter 7 alternating current, ncert solutions for class 12 physics chapter 8 electromagnetic waves, ncert solutions for class 12 physics chapter 9 ray optics and optical instruments, ncert solutions for class 12 physics chapter 10 wave optics, ncert solutions for class 12 physics chapter 11 dual nature of radiation and matter.

NCERT Solutions for Class 12 Physics Chapter 12 Atom

NCERT Solutions for Class 12 Physics Chapter 13 Nuclei

NCERT Solutions for Class 12 Physics Chapter 14 Semiconductor Electronics

NCERT Solutions for Class 12 Physics Chapter 15 Communication System

NCERT Solutions for Class 12 Physics Details

Before you deep-dive into class 12 Physics NCERT Solutions, here are some details you should know.

List of Topics Covered in Class 12 NCERT Physics Chapters

Here's a list of the main topics covered in each of the 15 chapters of Class 12 NCERT Physics

  • Electric Charges
  • Conductors and Insulators
  • Coulomb's Law
  • Electric Field and Electric Lines of Force
  • Electric Flux and Gauss's Law
  • Electric Potential and Potential Difference
  • Capacitors and Capacitance
  • Combination of Capacitors
  • Energy Stored in a Capacitor
  • Van de Graaff Generator
  • Electric Current
  • Ohm's Law
  • Kirchhoff's Laws
  • Resistors in Series and Parallel
  • Wheatstone Bridge
  • Potentiometer
  • Electrical Power and Energy
  • Magnetic Force on a Moving Charge
  • Magnetic Field due to a Current
  • Biot-Savart Law
  • Ampere's Law
  • Torque on a Current Loop
  • Magnetic Dipole Moment
  • Earth's Magnetism
  • Magnetic Properties of Materials
  • Magnetic Hysteresis
  • Faraday's Law of Electromagnetic Induction
  • Lenz's Law
  • Self-Induction and Mutual Induction
  • Transformer
  • AC Generator
  • AC Voltage Applied to a Resistor, Inductor, and Capacitor
  • AC Voltage Applied to a Series LCR Circuit
  • Power in AC Circuits
  • Quality Factor of a Resonant Circuit
  • LC Oscillations
  • Electromagnetic Waves and their Characteristics
  • Displacement Current
  • Electromagnetic Spectrum
  • Propagation of Electromagnetic Waves
  • Polarisation
  • Reflection and Refraction of Light
  • Total Internal Reflection
  • Refraction at Spherical Surfaces and by Lenses
  • Lensmaker's Formula
  • Magnification
  • Power of a Lens
  • Microscopes and Telescopes
  • Huygens Principle
  • Interference of Light Waves
  • Young's Double Slit Experiment
  • Diffraction of Light
  • Polarisation of Light
  • Photoelectric Effect
  • Particle Nature of Electromagnetic Radiation
  • Einstein's Photoelectric Equation
  • Dual Nature of Matter
  • Davisson and Germer Experiment

NCERT Solutions for Class 12 Physics Chapter 12 Atoms

  • Rutherford's Nuclear Model of Atom
  • Bohr's Model of Hydrogen Atom
  • Energy Levels
  • Spectra of Hydrogen Atom
  • De Broglie's Explanation of Bohr's Second Postulate
  • Atomic Masses and Composition of Nucleus
  • Size of the Nucleus
  • Nuclear Forces
  • Radioactivity
  • Nuclear Energy

NCERT Solutions for Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices, and Simple Circuits

  • Classification of Materials
  • P-type and N-type Semiconductors
  • PN Junction
  • Semiconductor Diode
  • Logic Gates

NCERT Solutions for Class 12 Physics Chapter 15 Communication Systems

  • Elements of a Communication System
  • Amplitude Modulation
  • Production and Detection of an AM Wave
  • Bandwidth of Signals
  • Communication Satellites

Section-Wise Explanation of Class 12 NCERT Physics Chapters

Before you begin practising class 12 Physics questions, it is essential for you to know what lessons and subtopics are in Physics that you should be studying. Thus, to help you better understand the sections of Class 12 Physics chapters here, we have listed the section-wise subtopics as available in the Class 12 NCERT Physics Book.

Note that, these section-wise topics of Physics will also help you stay organised and be consistent while studying Physics. Knowing this will ensure you are well aware of what topics you need to study for your upcoming examination.

Class 12 Physics NCERT Solutions Chapter 1 Electric Charges and Fields

Class 12 physics ncert solutions chapter 2 electrostatic potential and capacitance, class 12 physics ncert solutions chapter 3 current electricity, class 12 physics ncert solutions chapter 4 moving charges and magnetism, class 12 physics ncert solutions chapter 5 magnetism and matter, class 12 physics ncert solutions chapter 6 electromagnetic induction, class 12 physics ncert solutions chapter 7 alternating current, class 12 physics ncert solutions chapter 8 electromagnetic waves, class 12 physics ncert solutions chapter 9 ray optics and optical instruments, class 12 physics ncert solutions chapter 10 wave optics, class 12 physics ncert solutions chapter 11 dual nature of radiation and matter, class 12 physics ncert solutions chapter 12 atoms, class 12 physics ncert solutions chapter 13 nuclei, class 12 physics ncert solutions chapter 14 semiconductor electronics: materials, devices, and simple circuits, class 12 physics ncert solutions chapter 15 communication systems.

As per the revised CBSE curriculum, chapter 15 Communication Systems has been omitted from the CBSE Class 12 Physics.

Important Topics of Class 12 NCERT Physics

Although all the topics are important, however, there are certain chapters in Class 12 Physics that students should pay special attention to. Below, we have explained them in detail:

By referring to the NCERT Solutions for Class 12 Physics, you can solve a variety of questions on all the important topics mentioned in the above table.

Physics MCQ Solutions for Class 12 (Additional Q&A)

Try to solve the following Class 12 Physics MCQ Questions.

  • What is the SI unit of electric charge? 

Answer: (a.) Coulomb

Explanation: The SI unit of electric charge is Coulomb (C).

  • Which of the following is not a type of electromagnetic radiation?
  • Ultraviolet
  • Sound waves

Answer: (d.) Sound waves

Explanation: Sound waves are not a type of electromagnetic radiation.

  • What is the direction of the electric field at a point located at the centre of a positively charged spherical conductor?
  • Radially outward
  • Radially inward

Answer: (d.) Zero

Explanation: The electric field at the center of a positively charged spherical conductor is zero.

  • Which of the following statements is true for a concave mirror?
  • It always forms a virtual image.
  • It always forms a real image.
  • The focal length is negative.
  • The focal length is positive.

Answer: ( c.) The focal length is negative.

Explanation: The focal length of a concave mirror is negative.

  • The work done by a constant force is given by:
  • Force x distance
  • Force x time
  • Force x velocity
  • Mass x acceleration

Answer: (a.) Force x distance

Explanation: The work done by a constant force is given by W = Fd, where F is the force and d is the distance.

  • Which of the following is an example of a non-conservative force?
  • Gravitational force
  • Electrostatic force
  • Frictional force
  • Magnetic force

Answer: (c.) Frictional force

Explanation: Frictional force is an example of a non-conservative force as it dissipates energy as heat.

  • What is the direction of the magnetic field inside a long straight current-carrying wire?
  • Counterclockwise

Answer: (b.) Counterclockwise

Explanation: The direction of the magnetic field inside a long straight current-carrying wire is counterclockwise.

  • What is the formula for the period of a simple pendulum?
  • T = 2π√(L/g)
  • T = 2π√(g/L)
  • T = 2π√(mg/L)
  • T = 2π√(L/mg)

Answer: (a.) T = 2π√(L/g)

Explanation: The formula for the period of a simple pendulum is T = 2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity.

  • What is the unit of magnetic field?

Answer: (a.) Tesla

Explanation: The unit of magnetic field is Tesla (T).

  • Which of the following is an example of projectile motion?
  • A ball rolling down a hill.
  • A car moving on a straight road.
  • A rocket moving in space.
  • A ball thrown into the air.

Answer: (d.) A ball thrown into the air.

Explanation: Projectile motion refers to the motion of an object that is thrown or projected into the air and moves under the influence of gravity.

CBSE Class 12 Physics Syllabus 2023-24 (Unit-wise with Marks)

Introduction to ncert solutions for class 12 physics.

Many will have questions, what is NCERT Solutions for Class 12 Physics so, to answer this, let us give you a brief introduction.

Definition:

The NCERT Solutions for Class 12 Physics is nothing but a reference study material that is prepared by subject matter experts to help students solve and practise questions efficiently with higher accuracy.

The NCERT Physics Solutions of class 12 is prepared referring to the prescribed textbooks so that students can practise questions based on the NCERT Syllabus. Additionally, the NCERT Physics Solutions of class 12 are specific to intermediate students, but it can be used by other graded students or competitive exam candidates to prepare well for their examinations.

Why NCERT Solutions are Essential for Class 12 Physics Students

Due to various reasons, the NCERT Class 12 Physics Solutions are very important for the students although it is not mandatory, but you can benefit a lot from this single piece of study material. In this section, we have covered various points that prove why NCERT Solutions are essential for Class 12 Physics Students.

Types of Questions You Should Practise Using Class 12 NCERT Physics Solutions

If you are a CBSE Class 12 student studying Physics then you should solve MCQs, VSA (Very Short Answer), SA (Short Answer), and LA (Long Answer) types of questions. In all of these types of questions, numerical questions can be found many times. We suggest you use NCERT Solutions to get Physics MCQ solutions for class 12.

Understand CBSE Marking Scheme for 2023-24

If you are a CBSE Class 12 student and going to use NCERT Solutions for Class 12 Physics then you must understand the CBSE Marking Scheme 2023-24.

The CBSE board has divided the entire curriculum of Physics into equal portions for the academic year 2023-24. This has been done to enable students to learn the basic concepts of Physics with ease and provide sufficient time to cover the CBSE Class 12 Physics syllabus. Here, we provide the marking scheme of CBSE Class 12 Physics so that students can identify the Physics chapters that are very important from the board exam perspective (point of view). 

Covering the whole syllabus of CBSE Class 12 Physics 2023-24 helps students master problem-solving skills and develop more advanced logical thinking.

When Is the Best Time to Use NCERT Solutions for Class 12 Physics?

A Class 12 student can use NCERT Solutions for class 12 Physics anytime they want, but using the NCERT Solutions at following times helps the most and benefits a lot.

How to Use NCERT Solutions for Class 12 Physics Effectively?

If NCERT Solutions for class 12 Physics will be used in a proper manner, it will help students a lot in their academic growth as well as in learning new things about Physics. In order to help you learn how to use NCERT Solutions for Class 12 Physics effectively here, we have discussed some points.

Top Tips for Solving Class 12 Physics Problems with NCERT Solutions

Physics is not hard either its questions, but you have to learn the methods so that you can better understand the problems and use the appropriate study resources to learn and perform better in the Physics questions.

NCERT Solutions vs. Other Study Materials: Which is Better for Class 12 Physics?

Apart from NCERT Solutions, there are other study materials too that help students develop a stronger grip on Physics and help them score better marks. Therefore, to get a better perspective on which Physics study material is better for class 12 here, we have mentioned a comparison between NCERT Solutions and other study materials in a tabular format.

Common Mistakes to Avoid When Using NCERT Solutions for Class 12 Physics

There are certain mistakes that students often make when using NCERT Solutions for class 12 Physics, read about them in this section.

NCERT Solutions for Class 12 Physics: A Comprehensive Review

To help you better understand the NCERT Solutions of Class 12 Physics, here’s a comprehensive review.

THE BOTTOM LINE

NCERT Solutions for class 12 Physics is an ultimate study resource that helps students solve all the chapter-end questions of class 12 NCERT Physics Books.

This review section includes the discussion about the features of Solutions, how it helps students, how it will help you score or perform better in the exam, is there any alternative of NCERT Physics Solutions and much more.

Features of NCERT Solutions for Class 12 Physics PDF

There are a number of features of NCERT Solutions for Class 12 Physics PDF and you can get to know all of them by using them; however, here are a few features you may like to know about right now.

How NCERT Solutions for Class 12 Physics Can Improve Your Exam Performance

When your basic level understanding in Physics is crystal clear to you, you can easily perform better in the examination. Here are a few points that ensure referring to the NCERT Solutions for Class 12 helps you improve your exam performance.

The Benefits of Using NCERT Class 12 Physics Solutions

There are several benefits of using NCERT Class 12 Physics Solutions which we will discuss in this section. By knowing the benefits, you will know how much the NCERT Physics Solutions are helpful and can help you learn a variety of things.

How to Download NCERT Solutions for Class 12 Physics in PDF?

You can download NCERT Solutions for class 12 Physics in PDF on your smartphone using the App, but if you need the Physics solutions instantly then, follow the below-given steps. These steps can be used by anyone on any device (Smartphones, PC and Laptop) to get the NCERT Class 12 Physics Solutions on web view.

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5 Reasons to Choose NCERT Solutions for Class 12 Physics

Those who have no clear idea on whether to choose Class 12 NCERT Physics Solutions or not, the below given 5 reasons will clear their doubts and help them make the wise decision.

How to Choose the Right NCERT Solutions for Class 12 Physics

You can find hundreds of NCERT Solutions class 12 Physics PDF on the internet but before making the final decision to download or use them, make sure you cross-check the following points to choose the right NCERT Solutions for class 12 Physics.

What Are the Best Solutions for Class 12 Physics?

The Best solutions for Class 12 Physics are many which have been discussed here. Apart from the NCERT Solutions PDF itself, other study resources can be considered as an alternative to Class 12 NCERT Physics Solutions.

  • The Physics Solutions Saves Time: Student’s time is very crucial and that is why you should save your time whenever possible to utilise them in other most important tasks. Therefore, the NCERT Solutions for Class 12 Physics is considered as an essential tool because it helps you answer complex questions easily and saves your time. The Physics questions and answers PDF is also helpful to clear your conceptual doubts in a less time.
  • Helps in Solving the Tricky Physics Questions: Those questions that are difficult to solve can be answered using the NCERT Solutions for class 12 Physics, that is why, Physics solutions is considered important. By using the solutions, students get the access of step–by-step answers which helps answer the tricky questions.
  • Boost confidence in Physics Subject: A good self confidence in Physics not only helps students answer difficult questions, but aids them gain the confidence and courage to attempt any Physics questions of class 12 with ease. That is why, we think NCERT Solutions of class 12 Physics are an essential study resource.
  • When Doing Regular Study: During a regular study students can uses a variety of study resources for Physics such as textbooks, revision notes, reference books and etc but using the NCERT Solutions for class 12 Physics when doing regular study can help students better understand the topics as they can solve and clear their doubts in Physics easily.
  • After finishing a Chapter of Class 12 Physics: Ideally, all the students should solve and practise the chapter end questions just after finishing the lesson. This is the perfect time for the students to refer to the NCERT Solutions for class 12 Physics because at this time students may be stuck at various questions but using the NCERT Solutions of class 12 Physics one can easily solve all the questions they come across in NCERT Class 12 Physics Book.
  • During Board Exam Preparation: Since Class 12 is a board standard, all the students should pay attention to their exam preparation to score better marks in the examination. Therefore, we advise the preparing students to use the NCERT Solutions of class 12 Physics to solve the questions with ease when they feel stuck at Physics questions during the board exam preparation. The NCERT Solutions of Physics are capable of helping students solve NCERT 12 Physics questions regardless of how difficult the problems appear.
  • During Revision Process: While doing revision, students can take the help of NCERT Solutions for class 12 Physics. Revision time is considered the best because, the Physics solutions help answer questions quickly as well as saves a lot of precious time.
  • Cross-verify Your Answers: One of the best uses of NCERT Class 12 Physics Solutions is that you can cross-verify your answers to find out the mistakes. It will help you not only find your mistakes but help you answer those questions where you felt stuck while answering.
  • Improve Mistakes: Once you take the help of NCERT Solutions of Class 12 Physics, you can proceed further to work on those mistakes to improve. For improvement purposes, you can very easily use the Class 12 NCERT Physics Solutions because the answer of every single question is explained in detail using step-by-step methods.
  • Get a Distinct Perspective of Solving NCERT Physics Questions: While practising the questions from NCERT Physics Solutions many may find a distinct perspective of solving NCERT Physics Questions then theirs. This affects the overall learning and exam preparation as it will not only help solve the questions from different methods but may help learn new techniques to answer Physics questions in less time.
  • Understand the Question Firstly: Majority of students are unable to solve Physics questions easily because they don’t understand the question properly but try to answer them. Therefore, whether you are solving the question on your own or referring to the NCERT Physics Solutions of Class 12 make sure you understand the question properly to answer them accurately.
  • Look for clues in the question: Don’t jump over the NCERT Physics Solutions right after reading the question, wait for a while to re-read the question again and again to look for the hints and clues to answer questions by yourself. In case, you don’t get any clue then refer to the NCERT Solutions for class 12 Physics.
  • Check your answers: After solving the questions, make sure you check your answers or verify them using the NCERT Class 12 Physics Solutions. In this way, you not only learn to solve Physics questions accurately but you get to know about the mistakes in your answers that can be improved.
  • Mistake #1: Completely Rely on NCERT Physics Solutions. This mistake is often made by those who don’t understand the Physics topics and concepts properly, but try to solve the questions using the NCERT Solutions of Class 12 Physics. Students should try to avoid making this mistake as it will not help them much in their academic growth. Instead, relying on NCERT Physics 12 Physics Solutions, focus on understanding the core concepts of topics and then refer to the NCERT Solutions only when needed.
  • Mistake #2: Avoid taking help from concerned teachers or elders due to fear and hesitation. It is very much possible that some answers in NCERT 12 Physics Solutions will create confusion but not clearing the confusion will last longer and you will just copy the answers without understanding them. Those students who are introverts often make this mistake, so try to answer the questions after clearing the doubts from the teachers or elders. It will create a long term impact and help score better marks in the subject.
  • Mistake #3: Not focusing on steps or context discussed in Physics Solutions. There are several students who make this mistake very often and don’t take it seriously until they face difficulty in answering questions in the Physics examination. To avoid making this mistake, students should first learn about the Physics concepts and then they should be through with the NCERT Solutions for Class 12 Physics to practise questions.
  • Easy to Understand: Our subject experts have done tremendous work to turn complex and hard to understand Physics questions easy to understand. Anyone who has a basic idea of Class 12 Physics can easily comprehend the answers that are written in NCERT Solutions for class 12 Physics PDF.
  • Solutions are as per the Exam Pattern: Instead of using expert’s their own way of answering Physics questions, they have kept the solutions near the exam pattern as close as possible. Every single question of Class 12 Physics that is explained in the NCERT Solutions are as per the Class 12 Exam Pattern.
  • Available for Free in PDF: One of the best features that we think is, students can access the NCERT Solutions for Class 12 Physics 24×7 online in PDF using their Smartphones or Laptop/PC.
  • Follows Class 12 Physics Syllabus: Since experts have referred to the NCERT Class 12 Physics Book to solve the chapter-end questions, the whole solutions are as per the NCERT Physics Syllabus of Class 12.
  • Strengthen your Conceptual Understanding: The NCERT Solutions for class 12 Physics helps you understand the concepts of Physics because the questions are explained in a detailed manner by breaking each topic in step-by-step manner. Due to the enhanced conceptual understanding, you will be able to answer questions in the examination very easily.
  • Helps Practice questions: There is no denying the fact that solving the NCERT Class 12 Physics questions using Solutions helps practice questions with ease. Not only helps practice questions, but gives a glimpse of how to solve Physics questions during exam preparation in a sequence or following a systematic approach.
  • Helps Solve a Variety of Questions: One of the most important benefits is that, the NCERT Solutions of Class 12 Physics helps solve a variety of questions regardless of its difficulty levels. Whether it is easy or hard to answer questions, the NCERT Solutions for Class 12 Physics PDF is very efficient to provide questions and their detailed answers in PDF file. Due to the practice of a variety of questions, students can easily answer questions in the examination no matter what level of difficulty the question has.
  • Teaches Time Management: The time management skill is crucial especially in the examination. Those students who refer to NCERT Class 12 Physics Solutions on a regular basis and solve questions from it can easily learn the time management skill to perform better in the examination. Even about 5 minutes of smart use of time can make or break a student’s overall performance in the examination. And this can be learned from NCERT Solutions from class 12 Physics PDF.
  • Boost Knowledge and Confidence in Physics: A boost in confidence helps you answer any type of Physics questions regardless of its difficulty level. However, for many it is hard for them to feel confident even after completing the Class 12 Physics Syllabus, but those who regularly use the NCERT Solutions for Class 12 Physics can easily boost their knowledge and confidence in Physics.
  • Prepares for the Board examination and competitive exams: Class 12 Physics Solutions is not only for the learning purposes but for acing the board examination and competitive exams. Those students who use the NCERT Solutions for class 12 Physics get to know a lot of questions and methods to answer them that helps them easily pass the examinations with ease.
  • Increases the Conceptual Understanding: Nothing is without the concept so, when you are studying Physics, you are required to increase the conceptual understanding in the subject to be able to perform better in the exam. The NCERT Solutions of Class 12 Physics can help you do this with ease.
  • Helps increase the Accuracy in Physics: Maintaining the accuracy in Physics is vital to be able to score better marks in the examination. However, the minor mistakes are common in Physics, but practising Physics questions on a regular basis using NCERT Solutions for Class 12 Physics helps increase the accuracy in the subject as well as helps in avoiding the common mistakes.
  • Navigate to the Selfstudys.com using your internet browser. Such as Chrome, Mozila, Opera, or any internet browser your device has.
  • Let the website load fully.
  • Click on Navigation button and tap on “NCERT Books & Solutions”
  • It will expand in categories where you just need to click or tap on the “NCERT Solutions”
  • A New page will load, choose class 12 and you are ready to access the NCERT Solutions for Class 12 Physics for free in PDF.
  • It is Free and Available in PDF: If you are in search of NCERT Physics solutions for class 12 for free then there is no need to think much, the NCERT Solutions of class 12 Physics here at Selfstudys is absolutely free of cost and can be accessed in PDF file online. The PDF file of NCERT Solutions can be opened in any device such as Smartphone or laptop/PC.
  • NCERT Solutions Contains Answers Prepared by Subject Matter Experts: Reason number 2 is that, NCERT Solutions of class 12 Physics are prepared by subject matter experts who have years of experience in teaching and guiding the students that is why the NCERT Physics solutions are one of the most accurate study resources that students should use to practise Physics questions.
  • Helps a Lot During Self-study: When you are doing self-study at home where you can’t get access to any elders or teacher’s help, then you can use the NCERT Physics solutions of class 12 PDF to do your study well and score better marks in the examination.
  • One can Use It to do a Self-assessment: The NCERT Physics solutions of 12 is not only helpful for getting help in solving the difficult questions, but it can help you do a quick self-assessment where you can analyse your understanding and mistakes that you are often making.
  • Based on NCERT Class 12 Physics Syllabus: 5th reason to use the NCERT Solutions for class 12 Physics PDF is that it is based on NCERT Class 12 Physics Syllabus and can help students cover the whole syllabus with ease.
  • Check for Syllabus Based Question & Answers: It is important to check whether the NCERT Solutions contains the questions as per the syllabus in a chapter wise format or not. Checking this before accessing the NCERT Solutions of Physics will help you save lots of your time and will not create confusion.
  • Verify the Accuracy Level: Make sure the NCERT Solutions of class 12 Physics that you choose are prepared by subject matter experts and have the accuracy level high. Choosing the higher accuracy level Physics questions and answers help you prepare better and perform higher in the examination.
  • Look for How Easy the Answers are written: The answers in NCERT Class 12 Physics Solutions must be easy to comprehend and there shouldn’t be any step missing. Although, you can not understand it till you solve the questions, but going through the answers at once can help you identify this.
  • Check How Old the Physics Solutions PDFs are: It is vital to check how old the NCERT Physics solutions you are using because an old Physics solutions will not help you much due to their old methods; However, you can go for the old NCERT Physics Solutions if you are not referring to them from Class 12 Board exam perspective. You can refer to old Physics solutions as just a reference to practise several questions.
  • Syllabus Based NCERT Physics Solutions: One of the best Physics Solutions of Class 12 are those which are available here for free of cost in PDF. However, you can refer to any NCERT Physics Solutions which is prepared specifically for class 12 in which all the questions are as per the Syllabus.
  • Reference Textbook Solutions: While NCERT Physics Textbooks are one of the most prescribed study resources, some students prefer to use the reference textbooks in which they can find some extra Physics questions as well as the complete chapter-wise questions and their answers. If you don’t want to download a separate NCERT Physics Solutions for you class 12 and have access to the reference textbooks then don’t think much and use them.
  • Fair Copy of NCERT Class 12 Physics: If you have ever maintained the rough and fair copy of NCERT Class 12 Physics during your regular classes then you can refer to your Physics Fair copy as it will be the best solutions for Class 12 Physics which will help you understand the questions and answers very easily. Also, if you have a completed Physics fair copy in which you have covered all the Physics questions then, you are not required to download any NCERT Solutions for Class 12 Physics PDF.

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  • Chapter 1: Electric Charges And Fields

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields

Ncert solutions for class 12 physics chapter 1 – free pdf download.

The NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields are provided here to help students prepare well for the Class 12 CBSE Board exam, as well as competitive exams like JEE and more. Here, in these NCERT Solutions for Class 12 Physics , students can find solved answers for Electric Charges and Fields from Class 12, along with important questions from previous year question papers, exemplary problems, MCQs, worksheets and exercises that will help them to prepare for competitive exams as well.

These NCERT Solutions for Class 12 Physics will also help you go through the basics, and you should expect at least one question in your board exam from this chapter. It is easy to prepare Electric Charges and Fields Class 12 notes by practising these solutions. Download now the PDF of NCERT Solutions for Class 12 Physics Chapter 1 from the link below.

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NCERT Solutions for Class 12 Physics

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Class 12 Physics NCERT Solutions for Chapter 1 Electric Charges and Fields – Important Questions

Q 1.1) What is the force between two small charged spheres having charges of 2 × 10 –7 C and 3 × 10 –7 C placed 30 cm apart in the air?

Soln: Given,

The charge on the 1 st sphere and 2 nd sphere is q 1 = 2 x 10 -7 C and q 2 = 3 x 10 -7 C

The distance between two charges is given by r = 30cm = 0.3m

The electrostatic force between the spheres is given by the relation:

F = \(\begin{array}{l} \frac{1}{4\pi \epsilon _{o}}.\frac{q_{1}q_{2}}{r^{2}} \end{array} \)

Force, F = \(\begin{array}{l} \frac{9 \times 10^{9} \times 2 \times 10^{-7} \times 3 \times 10^{-7}}{(0.3)^{2}} \end{array} \) = 6 x 10 ‑3 N.

The force between the charges will be repulsive as they have the same nature.

Q 1.2) The electrostatic force on a small sphere of charge is 0.4 µC due to another small sphere of charge –0.8 µC in the air is 0.2 N.

(a) What is the distance between the two spheres?

(b) What is the force on the second sphere due to the first?

The charge on the 1 st sphere (q 1 ) and the 2 nd sphere (q 2 ) is 0.4 µC or 0.4 × 10 -6 C and -0.8 × 10 -6 C, respectively.

The electrostatic force on the 1 st sphere is given by F = 0.2N.

r 2 = \(\begin{array}{l} \frac{1}{4\pi \epsilon _{o}}.\frac{q_{1}q_{2}}{F} \end{array} \)

= \(\begin{array}{l} \frac{0.4 \times 10^{-6} \times 8 \times 10^{-6} \times 9 \times 10^{9}}{0.2} \end{array} \) = 144 x 10 -4

r = \(\begin{array}{l} \sqrt{144 \times 10^{-4}} \end{array} \) = 12 x 10 -2 = 0.12m

Therefore, the distance between the two spheres = 0.12 m

(b) Since the spheres have opposite charges, the force on the second sphere due to the first sphere will also be equal to 0.2N.

Q 1.3) Check that the ratio ke 2 /G m e m p is dimensionless. Look up a Table of Physical Constants and determine the value of this ratio. What does the ratio signify?

The ratio to be determined is given as follows :

where G is the gravitational constant in N m 2 kg -2

m e and m p are the mass of electron and proton in kg.

e is the electric charge (unit – C)

k = \(\begin{array}{l} \frac{1}{4\pi \epsilon _{o}} \end{array} \)  (unit – Nm 2 C -2 )

Therefore, the unit of the given ratio,

So, the given ratio is dimensionless.

e = 1.6 x 10 -19 C

G = 6.67 x 10 -11 N m 2 kg -2

m e = 9.1 x 10 -31 kg

m p = 1.66 x 10 -27 kg

Putting the above values in the given ratio, we get

So, the above ratio is the ratio of the electric force to the gravitational force between a proton and an electron when the distance between them is constant.

Q 1.4)  (i) Explain the meaning of the statement ‘electric charge of a body is quantised’. (ii) Why can one ignore the quantisation of electric charge when dealing with macroscopic, i.e. large-scale charges?

(i) The ‘electric charge of a body is quantized’ means that only integral (1, 2, …n) numbers of electrons can be transferred from one body to another.

Charges cannot get transferred in fractions. Hence, the total charge possessed by a body is only in integral multiples of electric charge.

(ii) In the case of large-scale or macroscopic charges, the charge which is used over there is comparatively too huge to the magnitude of the electric charge. Hence, on a macroscopic level, the quantisation of charge is of no use. Therefore, it is ignored, and the electric charge is considered to be continuous.

Q 1.5) When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs of bodies. Explain how this observation is consistent with the law of conservation of charge.

When two bodies are rubbed against each other,  a charge is developed on both bodies. These charges are equal but opposite in nature. And this phenomenon of inducing a charge is known as charging by friction. The net charge on both of the bodies is 0, and the reason behind it is that an equal amount of charge repels it. When we rub a glass rod with a silk cloth, a charge with the opposite magnitude is generated over there. This phenomenon is in consistence with the law of conservation of energy. A similar phenomenon is observed with many other pairs of bodies.

Q 1.6) Four point charges \(\begin{array}{l}q_{A} = 2 \mu C, \; q_{B} = -5 \mu C, \; q_{C} = 2 \mu C, \; and q_{D} = -5 \mu C\end{array} \) are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of 1 µC placed at the centre of the square?

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 6

In the above picture, we have shown the square mentioned in the question. Its side is 10 cm, four charges are placed at the corners of the squares, and O is the centre of the square.

(Sides) AB = BC = CD = DA = 10 cm

(Diagonals) AC = BD = \(\begin{array}{l}10 \sqrt{2} \; cm\end{array} \)

AO = OC = DO = OB = \(\begin{array}{l}5 \sqrt{2} \; cm\end{array} \)

At the centre point ‘O’, we have placed a charge of \(\begin{array}{l}1 \; \mu C\end{array} \)

In the above case, the repulsive force between corner A and centre O is the same in magnitude with the repulsive force by corner C to centre O, but these forces are opposite in direction. Hence, these forces will cancel each other, and from A and C, no forces are applied on the centre O. Similarly, from corner C, the attractive force is applying on to the centre O, and another force with the same magnitude is applying on the centre O; also these two forces are opposite in direction hence they are also opposing each other.

Therefore, the net force applying to the centre is zero because all the forces here are being cancelled by each other.

Q 1.7)   (i) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?

(ii) Explain why two field lines never cross each other at any point.

(i) When a charge is placed in an electrostatic field, then it experiences a continuous force. Therefore, an electrostatic field line is a continuous curve. And a charge moves continuously and does not jump from one point to the other. So, the field line cannot have a sudden break.

(ii) If two field lines cross each other at any point, then at that point, the field intensity will start showing in two directions at the same point, which is impossible. Therefore, two field lines can never cross each other.

Q 1.8) Two point charges q A = 3 µC and q B = –3 µC are located 20 cm apart in a vacuum.

(i) What is the electric field at the midpoint O of the line AB joining the two charges?

(ii) If a negative test charge of magnitude 1.5 × 10 –9 C is placed at this point, what is the force experienced by the test charge?

(i) The figure given below shows the situation given to us, in which AB is a line and O is the midpoint.

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 8

Distance between two charges, AB = 20 cm

Therefore, AO = OB = 10 cm

The total electric field at the centre is (Point O) = E

Electric field at point O caused by \(\begin{array}{l}+ 3 \; \mu C\end{array} \) charge,

Where \(\begin{array}{l}\epsilon _{0}\end{array} \) = Permittivity of free space and \(\begin{array}{l}\frac{1}{ 4 \pi \epsilon _{0}} = 9 \times 10^{9} \; Nm^{2} C^{-2}\end{array} \)

The electric field at point O caused by \(\begin{array}{l}- 3 \; \mu C\end{array} \) charge,

Therefore, the electric field at midpoint O is   \(\begin{array}{l}5.4 \times 10^{6} NC ^{-1}\end{array} \) along OB.

(ii) A test charge with a charge potential of \(\begin{array}{l}1.5 \times 10 ^{-9} \; C\end{array} \) is placed at midpoint O.

Let the force experienced by the test charge be  F

Therefore, F = qE

= \(\begin{array}{l}1.5 \times 10 ^{-9} \times 5.4 \times 10 ^{6} \\ \\ = 8.1 \times 10 ^{-3} \; N\end{array} \)

The force is directed along line OA because the negative test charge is attracted towards point A and is repelled by the charge placed at point B. As a result, the force experienced by the test charge is \(\begin{array}{l}q = 8.1 \times 10 ^{-3} \; N\end{array} \) along OA.

Q 1.9) A system has two charges \(\begin{array}{l}q _{A} = 2.5 \times 10 ^{-7} \;C \; and \; q _{B} = -2.5 \times 10 ^{-7}\;C\end{array} \) located at points A: (0, 0, -15 cm) and B (0, 0, + 15 cm), respectively. What are the total charge and electric dipole moment of the system?

The charges which are located at the given points are shown in the coordinate system as:

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 9

At point A, the total charge amount, \(\begin{array}{l}q _{A} = 2.5 \times 10 ^{-7} \;C\end{array} \)

At point B, the total charge amount, \(\begin{array}{l}q _{B} =  – 2.5 \times 10 ^{-7} \;C\end{array} \)

The total charge of the system is, \(\begin{array}{l}q _{A} + q_{B}= 2.5 \times 10 ^{-7} \;C – 2.5 \times 10 ^{-7} \;C = 0\end{array} \)

Distance between two charges at points A and B,

d = 15 + 15 = 30 cm = 0.3 m

The electric dipole moment of the system is given by,

Therefore, the electric dipole moment of the system is  \(\begin{array}{l}7.5 \times 10 ^{-8} \; C\end{array} \) m along the positive z−axis.

Q 1.10) An electric dipole with dipole moment \(\begin{array}{l}4 \times 10^{-9}\;  C\, m\end{array} \) is aligned at 30° with the direction of a uniform electric field of magnitude \(\begin{array}{l}5 \times 10^{4}\; N C^{-1}\end{array} \) . Calculate the magnitude of the torque acting on the dipole.

Electric dipole moment, \(\begin{array}{l}p = 4 \times 10^{-9}\;C\,m\end{array} \)

Angle made by p with a uniform electric field, \(\begin{array}{l}\theta = 30^{\circ}\end{array} \)

Electric field, \(\begin{array}{l}E = 5 \times 10^{4}\; NC^{-1}\end{array} \)

The torque acting on the dipole is given by the relation,

Therefore, the magnitude of the torque acting on the dipole is \(\begin{array}{l}10^{-4}\; Nm\end{array} \)

Q 1.11) A polythene piece rubbed with wool is found to have a negative charge of \(\begin{array}{l}3 \times 10^{-7}\; C\end{array} \) .

(i) Estimate the number of electrons transferred (from which to which?).

(ii) Is there a transfer of mass from wool to polythene?

(i) Since the wool is positively charged and the polythene is negatively charged, we can say that few amounts of electrons are transferred from wool to polythene.

Charge on the polythene, q = \(\begin{array}{l}3 \times 10^{-7}\; C\end{array} \) .

Amount of charge on an electron, \(\begin{array}{l}e = -1.6 \times 10^{-19}\; C\end{array} \)

Let the number of electrons transferred from wool to polythene be n

So, by using the given equation, we can calculate the value of n,

Therefore, the number of electrons transferred from wool to polythene is \(\begin{array}{l}1.87 \times 10 ^{12}\end{array} \)

Mass is also transferred as an electron is transferred from wool to polythene and an electron particle has some mass.

Mass of an electron, \(\begin{array}{l}m_{e} = 9.1 \times 10 ^{-31} kg\end{array} \)

Total mass transferred , m = \(\begin{array}{l}m_{e} \times n \\ \\ = 9.1 \times 10 ^{-31} \times 1.87 \times 10^{12} \\ \\ = 1.701 \times 10^{-18} \; kg\end{array} \)

Here, the mass transferred is too low that it can be neglected.

Q 1.12)  (i) Two insulated charged copper spheres, A and B, have their centres separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is \(\begin{array}{l}6.5 \times 10^{-7} \; C\end{array} \) each? The radii of A and B are negligible compared to the distance of separation.

(ii) What is the force of repulsion if each sphere is charged double the above amount, and the distance between them is halved?

(i) Charge on sphere A, \(\begin{array}{l}q_{A} = 6.5 \times 10^{-7} \; C\end{array} \)

Charge on sphere B, \(\begin{array}{l}q_{B} = 6.5 \times 10^{-7} \; C\end{array} \)

Distance between the spheres, r = 50 cm = 0.5 m

Force of repulsion between the two spheres, \(\begin{array}{l}F = \frac{1}{4 \pi \epsilon _{0}}. \frac{q _{A} q_{B}}{r ^{2}}\end{array} \)

Where \(\begin{array}{l}\epsilon _{0}\end{array} \) = Permittivity of free space and \(\begin{array}{l}\frac{1}{ 4 \pi \epsilon _{0}} = 9 \times 10^{9} \; Nm^{2} C^{2}\end{array} \)

Therefore, the force between the two spheres is \(\begin{array}{l}1.52 \times 10^{-2}\; N\end{array} \)

(ii) After doubling the charge,

Charge on sphere A, \(\begin{array}{l}q_{A} = 1.3 \times 10^{-6} \; C\end{array} \)

Charge on sphere B, \(\begin{array}{l}q_{B} = 1.3 \times 10^{-6} \; C\end{array} \)

The distance between the spheres is halved.

Force of repulsion between the two spheres,

Therefore, the force between the two spheres is 0.243 N.

Q 1.13) Suppose the spheres A and B in Exercise 12 have identical sizes. A third sphere of the same size but uncharged is brought in contact with the first, then brought in contact with the second, and finally removed from both. What is the new force of repulsion between A and B?

Distance between the spheres, A and B, r = 0.5 m

Initially, the charge on each sphere \(\begin{array}{l}q = 6.5\times 10^{-7} \; C\end{array} \)

When sphere A is touched with an uncharged sphere C, then half of the charge will be transferred to sphere C. Hence the charge on both spheres A and C will be q/2.

After that, when sphere C with charge q/2 is brought in touch with sphere B with charge q, then the charge on each of the spheres will be divided into two equal parts, is:

Hence, the charge on each of the spheres, C and B, is \(\begin{array}{l} \frac{3q}{4}\end{array} \)

The Force of repulsion between spheres A and B is:

Therefore, the force of attraction between the two spheres is \(\begin{array}{l}5.703 \times 10^{-3} \; N\end{array} \)

Q 1.14) The figure below shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge-to-mass ratio?

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 14

We can see here that particles 1 and 2 are moving in the direction of the positive charge, and we know that the opposite charge attracts each other and the same charge repels each other. So, here we can say that the charged particles 1 and 2, which are going towards the charged particle, are negatively charged. And particle 3 is being attracted towards the negative charge. So, particle 3 will be the positively charged particle.

The EMF or charge-to-mass ratio is directly proportional to the amount of depletion or depletion at a given velocity. Here, we can see that particle 3 is depleting more as compared to the other two. Therefore, it will have a higher charge-to-mass ratio.

Question 1.15)

Consider a uniform electric field E = 3 × 10 3 î N/C.

(a) What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the y z – plane?

(b) What is the flux through the same square if the normal to its plane makes a 60 ° angle with the x-axis?

(a) Electric field intensity, E = 3 × 10 3 î  N / C

Magnitude of electric field intensity, | E | = 3 × 10 3 N / C

Side of the square,  s = 10 cm = 0.1 m

Area of the square, A = s 2 = 0.01 m 2

The plane of the square is parallel to the y – z plane. Hence, the angle between the unit vector normal to the plane and electric field, θ = 0 °

Flux ( φ ) through the plane is given by the relation,

φ = | E |A cos θ

φ  = 3 × 10 3 × 0.01 × cos 0 °

φ = 30 N m 2 /C

(b) Plane makes an angle of 60 ° with the x-axis.

Hence, θ = 60°

Flux, φ = | E |A cos θ

Flux, φ  = 3 × 10 3 × 0.01 × cos 60°

Flux, φ  = 30 x 0.5

Flux, φ  = 15 N m 2 /C

Question 1.16)

What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

All the faces of a cube are parallel to the coordinate axes. Therefore, the number of field lines entering the cube is equal to the number of field lines piercing out of the cube. As a result, the net flux through the cube is zero.

Question 1.17)

Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 10 3 N m 2 /C.

(a) What is the net charge inside the box?

(b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box? Why or Why not?

(a) Net outward flux through the surface of the box, φ = 8.0 × 10 3 N m 2 /C

For a body containing net charge q, flux is given by the relation,

= 8.854 x 10 – 12 x 8.0 x 10 3 C = 7.08 x 10 – 8 C = 0.07 \(\begin{array}{l}\mu C\end{array} \)

Thus, the total charge inside the box is 0.07 \(\begin{array}{l}\mu C\end{array} \)

Net flux piercing out through a body depends on the net charge contained in the body. If the net flux is zero, then it can be inferred that the net charge inside the body is zero. The body may have an equal amount of positive and negative charges.

Question 1.18)

A point charge + 10 μC is at a distance 5 cm directly above the centre of a square of side 10 cm, as shown in Fig. 1.34. What is the magnitude of the electric flux through the square?

(Hint: Think of the square as one face of a cube with an edge 10 cm)

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 18

The square can be considered as one face of a cube of edge 10 cm with a centre where charge q is placed. According to Gauss’s theorem for a cube, total electric flux is through all its six faces.

Hence, electric flux through one face of the cube, i.e. through the square, is

Therefore, electric flux through the square is 1.88 × 10 5 N m 2 C – 1

Question 1.19)

A point charge of 2.0 μC is at the centre of a cubic Gaussian surface 9.0 cm on edge. What is the net electric flux through the surface?

Net electric flux ( φ Net ) through the cubic surface is given by

The total electric flux through the surface of the cube given is, \(\begin{array}{l}\phi _{ net } = 2.26 \times 10 ^{ 5 } N m ^{ 2 } C ^{ – 1}\end{array} \)

Question 1.20)

A point charge causes an electric flux of – 1.0 × 10 3 N m 2 /C to pass through a spherical Gaussian surface of a 10.0 cm radius centred on the charge.

(a) If the radius of the Gaussian surface were doubled, how much flux would pass through the surface?

(b) What is the value of the point charge?

(a) Electric flux, Φ = – 1.0 × 10 3 N m 2 /C

The radius of the Gaussian surface, r = 10.0 cm

Electric flux penetrating through a surface depends on the net charge enclosed inside the body. It does not depend on the size of the body. If the radius of the Gaussian surface is doubled, then the flux passing through the surface remains the same, i.e., – 10 3 N m 2 /C.

(b) Electric flux is given by the relation

q = total charge contained enclosed by the spherical surface = φ ε 0

q = – 1.0 x 10 3 x 8.854 x 10 – 12

q = – 8.854 x 10 – 9 C

q = – 8.854 n C

Therefore, the value of the point charge is – 8.854 n C.

Question 1.21)

A conducting sphere of radius 10 cm has an unknown charge. If the electric field 20 cm from the centre of the sphere is 1.5 × 10 3 N/C and points radially inward, what is the net charge on the sphere?

Electric field intensity (E) at a distance (d) from the centre of a sphere containing net charge q is given by the relation,

Where, q = Net charge = 1.5 × 10 3 N/C

d = Distance from the centre = 20 cm = 0.2 m

ε 0 = Permittivity of free space and \(\begin{array}{l}\frac{ 1 }{ 4 \pi \epsilon _{ 0 }} = 9 \times 10 ^{ 9 } N m ^{ 2 } C ^{ – 2 }\end{array} \)

Therefore, the net charge on the sphere is 6.67 n C.

Question 1.22)

A uniformly charged conducting sphere of 2.4 m diameter has a surface charge density of 80.0 μC /m 2

(a) Find the charge on the sphere.

(b) What is the total electric flux leaving the surface of the sphere?

(a) The diameter of the sphere, d = 2.4 m

The radius of the sphere, r = 1.2 m

Surface charge density, σ = 80.0 μC /m 2 = 80 × 10 – 6 C/m 2

The total charge on the surface of the sphere can be calculated as follows,

Q = Charge density × Surface area

= σ × 4πr 2

= 80 × 10 – 6 × 4 × 3.14 × ( 1.2 ) 2

= 1.447 × 10 – 3 C

Therefore, the charge on the sphere is 1.447 × 10 – 3 C.

(b) Total electric flux ( φ Total  ) leaving out the surface of a sphere containing net charge Q is given by the relation,

Electric flux = 1.63 x 10 8 N C – 1 m 2

Therefore, the total electric flux leaving the surface of the sphere is 1.63 × 10 8 N C – 1 m 2

Question 1.23)

An infinite line charge produces a field of 9 × 10 4 N/C at a distance of 2 cm. Calculate the linear charge density.

The electric field produced by the infinite line charges at a distance d having linear charge density λ is given by the relation,

d = 2 cm = 0.02 m

E = 9 x 10 4 N / C

ε 0 = Permittivity of free space and \(\begin{array}{l}\frac{ 1 }{ 4 \pi \epsilon _{ 0 }} = 9 \times 10 ^{ 9 } N m ^{ 2 } C ^{ – 2 }\end{array} \) \(\begin{array}{l}\\ \lambda = \frac{0.02\times 9\times 10^{4} }{2\times 9\times 10^{9} } \\ \lambda = 10 \mu C/m\end{array} \)

Question 1.24)

Two large, thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and magnitude 17.0 × 10 – 22 C /m 2

  (a) In the outer region of the first plate?

(b) In the outer region of the second plate and (c) between the plates?

The situation given in the question can be depicted in the following figure.

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 24

Parallel plates A and B are placed close to each other, as shown in the figure. The region between plates A and B is labelled as II, the outer region of plate A is labelled as I, and the outer region of plate B is labelled as III.

(a) The charge density of plate A can be calculated as,

σ = 17.0 × 10 – 22 C/m 2

(b) Similarly, the charge density of plate B can be calculated as,

σ = – 17.0 × 10 – 22 C/m 2

(c) In regions I and III, electric field E is zero. This is because the charge is not enclosed by the respective plates.

Electric field E in region II is given by the relation,

ε 0 = Permittivity of free space = 8.854 × 10 – 12 N – 1 C 2 m – 2

Therefore, the electric field between the plates is 1.92 x 10 – 10 N/C

Question 1.25)

An oil drop of 12 excess electrons is held stationary under a constant  electric field of 2.55 × 10 4  NC –1 (Millikan’s oil drop experiment). The  density of the oil is 1.26 g cm –3 . Estimate the radius of the drop. (g = 9.81 m s –2 ; e = 1.60 × 10 –19 C).

Excess electron on an oil drop, n = 12

Electric field intensity, E= 2.55 × 10 4  NC –1

Density of oil, ρ = 1.26 g cm –3

Acceleration due to gravity, g = 9.81 m s –2

Charge of an electron, e = 1.60 × 10 –19 C

The radius of the oil drop = r

Force due to the electric field will be equal to the weight of the oil drop (W)

q = ne = net charge on the oil drop

m = mass of the oil drop

= volume of the oil drop x density of the oil

= (4/3)πr 3 x ρ

Ene= (4/3)πr 3 x ρ x g

= 9.82 x 10 -7 m

The radius of the oil drop is 9.82 x 10 -7 m

Question 1.26)

Which among the curves shown in the figure cannot possibly represent electrostatic field lines?

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 26

a) The field lines are not normal to the surface of the conductor. Therefore, it does not represent electrostatic field lines.

(b) In this figure, the field lines emerge from the negative charge and terminate at the positive charge. This is not possible. Therefore, it does not represent electrostatic field lines.

(c) The electric field is emerging from the positive charge, and it repels each other. Therefore, the field lines shown represent electrostatic field lines.

(d) The field lines shown intersect each other. Therefore, the field lines shown do not represent electrostatic field lines.

(e) The closed loops are formed in the area between the field lines. Therefore, it does not represent electrostatic field lines.

Question 1.27)

In a certain region of space, the electric field is along the z-direction throughout. The magnitude of the electric field is, however, not constant but increases uniformly along the positive z-direction at the rate of 10 5   NC –1 per metre. What are the force and torque experienced by a  system having a total dipole moment equal to 10 –7  cm in the negative  z-direction?

The total dipole moment of the system, p=q×dl=−10 −7 cm

The rate of increase of the magnitude of the electric field along the positive z-direction = 10 5  NC –1 per metre.

The force experienced by the system is given as

F=q(dE/dl) x dl = p x (dE/dl) =- 10 −7 ×10 −5

The force experienced by the system is – 10 −2 N. This is in the negative z-direction and opposite to the direction of the electric field. Therefore, the angle between the dipole moment and the electric field is 180 o . Torque (τ) =pEsin180 0 =0

Therefore, the torque experienced by the system is zero.

Question 1.28)

(a) A conductor A with a cavity, as shown in figure (a), is given a charge Q. Show that the entire charge must appear on the outer surface of the conductor. (b) Another conductor, B with charge q, is inserted into the cavity, keeping B insulated from A. Show that the total charge on the outside surface of A is Q + q [Fig. (b)]. (c) A sensitive instrument is to be shielded from the strong electrostatic fields in its environment. Suggest a possible way.

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 28

(a) A Gaussian surface is considered within the conductor that encloses the cavity. Within the conductor, the electric field intensity (E) will be zero.

The charge inside the conductor is q, and the permittivity of free space is ∈

According to Gauss’s law,

Flux, ϕ=E.ds = q/∈ 0  Electric field intensity, E=0

The permittivity of the free space, ∈ 0  ≠ 0

Therefore, the charge inside the conductor, q=0

Therefore, the entire charge appears on the outer surface of the conductor.

(b) A conductor B is kept in the cavity, and it is insulated from A. Hence a charge – q will be induced in the inner surface of conductor A, which in turn will induce a charge +q on the outer surface of A.  Therefore, the total charge on the outer surface of A will be equal to Q+q.

(c) The sensitive instrument can be shielded from the electrostatic field by keeping it fully enclosed inside a metallic surface.

Question 1.29)

A hollow charged conductor has a tiny hole cut into its surface.  Show that the electric field in the hole is \(\begin{array}{l}\frac{\sigma }{2\epsilon _{0}}\hat{n}\end{array} \) , where nˆ is the  unit vector in the outward normal direction and σ is the surface  charge density near the hole

Considering that the hole is filled up, then the electric field intensity at a point close to the surface of the conductor is given by Gauss’s law,

Flux,  \(\begin{array}{l}\phi =E.ds=\frac{q}{\epsilon _{0}}\end{array} \)

here, σ is the surface charge density

ds is the area of the Gaussian surface

Eds= (σ x ds)/∈ 0

E = σ /∈ 0 

=   \(\begin{array}{l}\frac{\sigma }{\epsilon _{0}}\hat{n}\end{array} \)

Let E 1 be the electric field due to the hole, and E 2 is the electric field due to the rest of the conductor. E 1 and E 2 are opposite in direction and equal in magnitude since the total electric field inside the conductor is zero.

The electric field E = σ /∈ 0  is due to the superposition of E 1 and E 2 .

E = E 1 + E 2

From equation (1), we know E 1 = E 2

Therefore, E = 2E 1

Therefore, the electric field in the hole

E 1 =  \(\begin{array}{l}\frac{\sigma }{2\epsilon _{0}}\hat{n}\end{array} \)

Question 1.30)

Obtain the formula for the electric field due to a long thin wire of uniform linear charge density E without using Gauss’s law. [Hint: Use Coulomb’s law directly and evaluate the necessary integral.]

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 30

Consider a long thin wire of uniform linear charge density λ. A point P is taken at a distance r from the midpoint C of the wire. The electric field at point P due to the wire is E.

Let E be the electric field at point P due to the wire

Consider a small length element dx on the wire with centre O, such that OC = x

Let q be the charge on this element, q = λdx

The electric field at A due to the element is

OP 2 = r 2 + x 2

The electric field (dE) is resolved into two rectangular components, dEcosθ and dEsinθ. dEsinθ is the parallel component, and dEcosθ is the perpendicular component. When the whole wire is considered, the parallel component dEsinθ is cancelled. Only the perpendicular component dEcosθ affects point P.

In the ΔOCP, x = r tanθ —–(2)

Differentiating equation (1) we get

dx = rsec 2 θdθ

r 2 + x 2 = r 2 + r 2 tan 2 θ

= r 2 (1+ tan 2 θ)  = r 2  sec 2 θ

Substituting in (1)

The wire is of infinite length. Therefore, A and B are infinite distances apart. Therefore, θ varies from -π/2 to +π/2. The electric field intensity at the point P due to the whole wire is

=  \(\begin{array}{l}\frac{\lambda}{4 \pi \in_{0} r}[\sin \theta]_{-\pi / 2}^{\pi / 2}=\frac{\lambda}{2 \pi \in_{0} r}\end{array} \)

Question 1.31)

It is now established that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so-called ‘up’ quark (denoted by u) of charge + (2/3) e and the ‘down’ quark (denoted by d) of charge (–1/3) e, together with electrons, build up ordinary matter. (Quarks of other types have also been found, which give rise to different unusual varieties of matter.) Suggest a possible quark composition of a proton and neutron.

The net charge of a proton is +e. The value +e can be got when  \(\begin{array}{l}p = \left ( \frac{2}{3}+\frac{2}{3}-\frac{1}{3} \right )e\end{array} \)

Therefore, the proton has two up quarks and one down quark

The net charge of a neutron is 0. This can be got when  \(\begin{array}{l}n = \left ( \frac{2}{3}-\frac{1}{3}-\frac{1}{3} \right )e\end{array} \) = 0

Therefore, the neutron has one up quark and two down quarks.

Question 1.32)

(a) Consider an arbitrary electrostatic field configuration. A small test charge is placed at a null point (i.e., where E = 0) of the configuration. Show that the equilibrium of the test charge is necessarily unstable. (b) Verify this result for the simple configuration of two charges of the same magnitude and sign placed a certain distance apart.

(a) Let us consider that the equilibrium is stable. Then if the test charge is displaced in any direction, it will experience a restoring force towards the null point. This means that all the field lines near the null point will be directed towards the null point. That is, there is a net inward flux of electric field through a closed surface around the null point. But according to Gauss’s law, the flux of an electric field through a surface, not enclosing any charge, must be zero. Hence, equilibrium cannot be stable. (b) The null point is the mid-point of the line joining the two charges. If the test charge is displaced along the line from the null point, there is a restoring force. If the test charge is displaced normally to the line, the net force takes it away from the null point. Hence, the stability of equilibrium needs restoring force in all directions.

Question 1.33)

A particle of mass m and charge (–q) enters the region between the  two charged plates, initially moving along the x-axis with speed v x   (like the figure in question 1.14 ). The length of the plate is L, and a uniform electric field E is maintained between the plates. Show that the  vertical deflection of the particle at the far edge of the plate is  qEL 2 /(2m v x 2 ).  Compare this motion with the motion of a projectile in a gravitational field  discussed in Section 4.10 of Class XI Textbook of Physics.

NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields Question 33

Mass of the particle = m

Charge on a particle  =−q

Velocity of the particle =v x

Length of the plates =L

The electric field between the plates =E

Mechanical force, F = Mass (m) × Acceleration (a)

Electric force, F=qE

Therefore, acceleration, a = qE/m ——–(1)

The time required for the particle to the field of length L is given by, t= distance/time

= Length of the plate/Velocity of the particle = L/v x ​In the vertical direction, initial velocity, u=0

The vertical deflection of the particle can be obtained from the equation

s=ut+(1/2)at 2

This is similar to the motion of horizontal projectiles under gravity.

Question 1.34)

Suppose that the particle in Exercise 1.33 is an electron projected with velocity v x  = 2.0 × 10 6 m s –1 . If E between the plates separated by 0.5 cm is 9.1 × 10 2 N/C, where will the electron strike the upper plate? (|e|=1.6 × 10 –19 C, m e = 9.1 × 10 –31 kg.)

Velocity of the electron, v x  = 2.0 × 10 6 m s –1

Separation between the plates, d = 0.5 cm = 0.5 x 10 -2 m

Electric field between the plates = 9.1 × 10 2 N/C

The distance at which the electron strikes the upper plate is

= \(\begin{array}{l}\sqrt{\frac{0.364 \times 10^{-19}}{14.56 \times 10^{-17}}}\end{array} \)

= \(\begin{array}{l}\sqrt{2.5 \times 10^{-4}}\end{array} \)

The electron strikes the upper plate after 1.6 cm

The NCERT Solutions for Class 12 Physics deals with questions regarding the linear charge density of an infinite line charge and many other questions regarding the electric field. This chapter is one of the most important chapters for Class 12 students, as questions from this chapter might be asked in competitive exams too.

Class 12 Physics NCERT Solutions for Electric Charges

Chapter 1, Electric Charges of Class 12 Physics, is prepared as per the latest CBSE Syllabus 2023-24. In NCERT Solutions for the chapter Electric Charges and Fields, we will be solving questions on how to calculate forces between two charged particles, which are kept at a certain distance from each other. We will be explaining the reason behind the charge appearing in materials due to rubbing against each other, just like when you rub a glass rod with a silk cloth. Do you know why we ignore the quantization of charge when it comes to large-scale charges? Find it out here.

Subtopics of Class 12 Physics Chapter 1 Electric Charges and Fields

  • Introduction
  • Electric Charge
  • Conductors and Insulators
  • Charging by Induction
  • Additivity of Charges
  • Charge is Conserved
  • Quantisation of Charge
  • Coulomb’s Law
  • Forces between Multiple Charges
  • Electric Field Due to a System of Charges
  • The Physical Significance of the Electric Field
  • Electric Field Lines
  • Electric Flux
  • The Field of an Electric Dipole
  • The Physical Significance of Dipoles
  • Dipole in a Uniform External Field
  • Continuous Charge Distribution
  • Gauss’s Law
  • Applications of Gauss’s Law
  • Field Due to a Uniformly Charged Infinite Plane Sheet
  • Field Due to a Uniformly Charged Thin Spherical Shell

Students can utilise the NCERT Solutions for Class 12 Physics Chapter 1 for any quick references to comprehend these concepts and other complex topics.

Can two field lines cross each other? Find out here in this chapter. An electrostatic field is a continuous curve; find the reason why. We will be solving questions on finding the total charge and dipole moment of the system along with torque acting on the dipole and electric field of a dipole. When you rub wool with polythene, do you think the mass was transferred from wool to polythene? Find out the answer below.

What will happen when the charge on the two spheres which are kept nearby is doubled and the distance is reduced? We will be showing you the answer to one of the questions below. We will be facing questions on the flux of the field through a square, cube and even a surface. We will also be seeing net charge inside a box and what will happen if the Gaussian surface is doubled, and what the amount of flux passing through the surface is.

Class 12 Physics is tough for many students who struggle to get a good score in Class 12 Physics CBSE Board examinations. In order to score good marks, students are advised to follow the NCERT Solutions provided here. It will build much-needed confidence in you as it gives you knowledge of the types of questions appearing in the board examination.

Why Opt for BYJU’S?

BYJU’S motto is to guide the students of Class 12 in their board exams, for which they provide notes, study materials, numerical problems, diagrams, videos and animation. To get access to all the information that helps you prepare for the CBSE examinations, visit BYJU’S website or download BYJU’S – The Learning App.

Disclaimer – 

Dropped Topics – 

1.2 Electric Charge (delete only activity with paper strips and making electroscope) 1.3 Conductors and Insulators (delete only the concept of earthing) 1.4 Charging by Induction Exercises 1.13, 1.25–1.34

Frequently Asked Questions on NCERT Solutions for Class 12 Physics Chapter 1

Are the ncert solutions for class 12 physics chapter 1 sufficient for the cbse exam preparation, explain coulomb’s law covered in chapter 1 of ncert solutions for class 12 physics., what are the main topics covered in chapter 1 of ncert solutions for class 12 physics, leave a comment cancel reply.

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CBSE Class 12 Practice Paper with Solution for Board Exam 2024 for All Subject, Download PDF

 cbse class 12 practice papers 2024: get here practice papers with solutions for all subjects of cbse class 12. download pdf of questions by subject experts and boost your cbse board exam preparations..

Roshni Yadav

CBSE Class 12 Practice Papers 2024: CBSE Class 12 Board Exams 2024 will start on February 15, 2024. As less than two weeks are left until the final exams, it is a crucial stage for students to intensify their preparations. At this point, last-minute revision and practice of a sufficient number of questions become of great importance, as they will not only help students consolidate their knowledge but will also help them assess their level of preparation.

Students are advised to revise all chapters, especially important topics, and practice sample papers or model papers to understand the demands of the paper. Through solving practice papers, students will be able to develop an efficient time management strategy.

CBSE Class 12 Practice Papers with Solutions, Download PDF

Team Jagran Josh presents below the subject-wise practice papers for the CBSE Class 12 Board Exam 2024. The practice papers have been developed according to the latest CBSE syllabus , exam pattern, and official Class 12th sample papers . You can also check the marking scheme and solutions for each practice paper to help you with quick revision and achieve high scores in your upcoming board exam.

Features of CBSE 12th Practice Question Papers

  • The subject-wise practice papers are prepared on the basis of the latest CBSE Class 12 syllabus.
  • Question formats and language are entirely aligned with the latest CBSE Class 12 sample papers.
  • Practice papers are developed by subject experts. 
  • Practice papers cover the key concepts and topics carrying high weight for the board exam.
  • Solutions have been provided for self-assessment and attaining a clear understanding of concepts. It will help you improve your answering skills.
  • Direct download links to practice papers and solutions are provided for quick access.

Consistent practice is considered the key to success, and in this context, the subject-wise practice papers provided here are indispensable tools aiding students in performing well and securing high marks in their CBSE Class 12 Board Exam 2024.

Important Study Material for CBSE Class 12 Board Exam 2024

  • CBSE Class 12 Syllabus 2023-24 PDF (All Subjects)
  • CBSE Class 12 Deleted Syllabus (All Subjects)
  • CBSE Class 12 Previous Year Papers with Solution PDF Download
  • CBSE Class 12 Additional Practice Questions
  • CBSE Class 12 Sample Paper 2023-24 with Solution and Additional Practice Questions

Students can also solve the previous year question papers,  question banks and additional practice papers. Through solving questions students will be able to overcome their board exam fear and will be able to score higher marks in the final exams. 

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MP Board Physics Paper 2024 Class 12 with Answer key_00.1

MP Board Physics Paper 2024 Class 12 with Answer key [ Solved ]

MP Board Physics Paper 2024 Class 12 2024 PDF & MP Board Physics Answer Key is updated here. Check MP Board 12th Physics Question paper PDF with answers.

MP Board Physics Paper 2024 Class 12 with Answer key_20.1

Table of Contents

MP Board Physics Paper 2024

MP Board Class 12 Physics exam 2024 started at 9 AM on February 12, 2024. MP Board Physics Paper 2024 is completely based on the MP Board 12th syllabus. As the Physics exam finished at 12 PM, we will upload the Class 12th MP Board Physics Paper set-wise in this post. Students who will take the exam next year must solve the Physics Question Paper 2024 with the Physics Paper 2024 MP Board to know the paper level.

MP Board 12th Physics Important Questions 2024 PDF for Exams

Scroll down to check the MP Board Physics Paper 2024 Class 12 2024 PDF with answers. The Physics Answer Key 2024 PDF and MP Board Physics Question Paper PDF  download Links are also given here in both English and Hindi. Also please practice all the important MP board 12th physics important questions 2024 pdf at the end of the post.

MP Board Physics Paper 2024: Overview

Students must complete the Class 12th MP Board Physics paper in the 3-hour allotted time. The MP Board 12th Physics Questions includes questions of different types as well as the full question paper outline. Check more information about MP Board Physics Answer Key below.

MP Board Physics Answer Key 2024

As the MP Board Class 12 Physics 2024 exam finished on February 12, we have uploaded the Physics answers against the question marking. We will try to upload the accurate MP Board Physics Answer key 2024 for all the sets here.

Check,   MP Board Time Table 2024 Out, Know Class 10th Exam Date

MP Board 12th Physics Questions 2024 Based on Question paper

Reviewing the MP Board Class 12th Physics Paper PDF is very important not only for attempting the paper but also for those who are going to attempt the paper next year. So we are requesting the students to check all the answers and MP Board Class 12th Physics Paper questions and calculate an estimate score.

MP Board Physics Paper 2024 Class 12 with Answer key_30.1

Fill in the Blanks – ANSWERS

b) Decrease

c) Diamagnetic substance

d) Displacement current

e) Converge

f) Conduction Band

MP Board Physics Paper 2024 Class 12 with Answer key_70.1

Answer of true /False Question no, e) – TRUE

MP Board Physics Paper 2024 Class 12 with Answer key_80.1

One word Answer Type Questions – ANSWERS

c. δ – Minimum

d. P-type semiconductor.

MP Board Physics Paper 2024 Class 12 with Answer key_100.1

एक लये शीधे तार में 30 की धाता प्रवात होती है। चार में 10 भी पूरी पर रिया बिंदु पर चुम्बकीय क्षेत्र के परिमान की कीजिए। A long straight wire carries a current of 30A. Calculate the magnitude of magnetic field at a point 30 con from the wire.

14. प्रकाश के पूर्ण आतरिक परावर्तनका निम्नलिखित विन्दुओं के आधार पर कीजिए

(1) नानांकित किरण आरेख (ii) परिभाष (iii) एक अनुष Describe total internal reflection of light on the brais of following points (1) Labelled ray diegram (ii) Definition (iii) An application

ह के उम मियात जननिविदुओं के आधार पर कीजिए (1) तरंगाध की परिभाषा (रिंका किरण आध (iii) द्वितीयक तांशिकाओं का निर्णय

Describe Hoygen’s principle on the basis of following points: (1) Definition of wave front (ii) Hay diagram of spherical wave emanating from peint source (iii) Emanation of secondary wavelets:

15. Write three experimental observations of photoelectric effect. अपरा/ OR फोटॉन की तीन विशेषताएँ लिखिए। Write three characteristics of photop

16. किसी ऐल के विद्युत वाहक यल, विभवांतर व आंतरिक प्रतिरोप के बीच संस्थापित कीजिए। Establish the relation between EMF, terminal voltage and internal resistance of a cell. श्रीटाटोन सेतु का नामांकित चित्र बनाइए एवं केतु के लिए आवश्यक Draw the labelled diagram of wheatstone bridge and write the necessary condition for the halance of wheatstone bridge

17. Describe an expression for motional electromotive force induced across a ight conductor moving in any uniform magnetic field. OR Find the expression of resultant voltage, impedance and phase difference sen current and voltage with the help of phaser diagram in series LCR Circuit.

18. मन्द्रमों के संवाहन की परिणामी क्षमता के लिए व्यंजक की स्थापना Establish the expression for the net power of combination of two thin lenses kept in contact.

19. Write two shortcomings of Rutherford’s nuclear model and explain how Bohr’s model of hydrogen atom ovariome these shortcomings? or, नापिकीय मंनयन एवं विखन की एक-एक कहना में चाया कीजिए। Explain the nuclear fusion and fission with the help of one example each.

20. निर्वात में एक दुसरे से 40 पेपी दूरी पर स्थित हैं। इन दोनों प्रवेश को जोड़ने वाली रेखा के पर विद्युत अत्र की तीव्रता अपना / OR 3 př, 4 př a 5 pl धारितानी सापार्यक्रम में 120V की बैटरी से जुड़े हैं। संयोजन की कुल धारिला कपिर आवेश ज्ञान जिए। Three capaciters of capacitance 3 pF, 4 pf and 5 pF are connected in parallel to a 120V battery, Find the total capacitance of the combination and charge on cach capacitor.

Please refer to the image below for Question no 20.

MP Board Physics Paper 2024 Class 12 with Answer key_140.1

MP Board Class 12th Physics Paper: Pattern

The MP Board Physics Question Paper 2024 helps students understand the marking scheme, question pattern, number and type of questions, and so on. Students can determine what exactly went wrong in the exam by solving MP Board 12th Class Paper 2023–24.

  • In the MP Board Physics Paper 2024 Class 12, Questions 1, 2, and 4 are worth 6 marks each.
  • 5 marks Questions were asked. If we specifically state that Nos. 3–5 will be worth 5 points.
  • There will be 6 questions (No. 6 – 12), each worth 2 marks.
  • Questions 13-16 carry 3 marks each.
  • Questions 17-20 carry 4 marks each.

MP Board Physics Paper 2024 Class 12 with Answer key_150.1

MP Board Class 12 Physics Question Paper 2024 PDF

This section will upload the MP Board Physics Paper 2024 class 12 PDF with all the possibly correct answers. Students can download that Class 12th MP Board Physics Paper PDF without any registration.

Must Check, MP Board Sanskrit Question Paper 2024, Download Answer Key PDF

MP board 12th physics important questions 2024 PDF

Here we gave some important Physics model questions of 1, 2, 3, and 5 marks. All these questions are from previous years’ question papers so there is a high chance that the same type of questions can be asked in the MPBSE Physics question paper 2024.

MCQ Type (Mark – 1)

  • भाभा परमाणु अनुसंधान केन्द्र स्थित है। (i) नई दिल्ली (ii) मुम्बई (iii) कोलकाता (iv) बैंगलोर
  • जर्मेनियम अर्धचालक में वर्जित ऊर्जा अंतराल होता है। (i) 1.1 eV (ii) 1.9 eV (iii) 0.72 eV (iv) 0.75 eV
  • धारा घनत्व का S.I. मात्रक है। (i) कूलाम / मीटर (ii) एम्पीयर / मीटर 2 (iii) कूलाम / मीटर 2 (iv) एम्पीयर / मीटर
  •  शुद्ध संधारित्र युक्त प्रत्यावर्ती परिपथ में प्रवाहित थारा एवं आरोपित चोण्टता के मध्य कलांतर होता है। (i) 0 (ii) 1 (iii) π/2 (iv) –π/2
  •  दूरदर्शी में नेत्रिका की फोकस दूरी, अभिदृश्यक की फोकस दूरी – (i) से कम होती है। (ii) से अधिक होती है। (iii) के बराबर होती है। (iv) इनमें से कोई नहीं
  • एक न्यूट्रान का द्रव्यमान होता है – (i) 1.67. × 10-31 kg (ii) 1.67 × 10-27 kg (iii) 1.67×10-9 kg (iv) 1.67 x 10-23 kg

Fill in the blanks (Marks -2)

  • The ohmic resistance of an ideal inductance is___
  • The frequency of the light wave is order of
  •  The frequency of a Direct Current is____
  • Magnetic field is _______a quantity.
  • The _______of the galvanometer is reduced by the use of shunt.
  • Electromagnetic wave of highest frequency is _______
  • The velocity of light ______________when it goes to rare medium to denser.

SAQ (Marks -2)

  • प्रकाश विद्युत प्रभाव क्या होता है? आइन्स्टीन का प्रकाश विद्युत समीकरण लिखिए। What is Photoelectric effect ? Write Einstein photo electric equation.
  • समभारिक किसे कहते हैं? उदाहरण दीजिए। What is Isobar? Give example.
  • चुम्बकीय क्षेत्र रेखाओं के प्रारंभिक तथा अंतिम सिरे नहीं होते, क्यों? Why there is no end point of magnetic field lines.
  • ओम का नियम लिखों । एवं धारा, विभवान्तर के मध्य ग्राफ बनाइए। Write Ohm’s law and also draw graph between voltage and current.
  • परमाणु के नाभकीय मॉडल की खोज किसने की? चित्र बनाइए। Who discovered the nucleus model of atom? Draw its diagram.
  • बोर मॉडल की कोई दो परिकल्पनाएँ लिखिए। Write any two Postulate of Bohr’s model.
  • एक इलेक्ट्रॉन विद्युत क्षेत्र में उच्च विभव की ओर गति करेगा या निम्न विभव की ओर ? क्यों ? Where will an electron move in an electric field either high potential side or low potential side? and why?
  • संयुग्मी फोकस किसे कहते हैं? What is Conjugate focus?
  • एक विद्युत बल्ब 220 V आपूर्ति पर 200 W शक्ति देने के लिए बनाया गया है। बल्व का प्रतिरोध ज्ञात कीजिए। A light bulb is rated at 200 W for a 220 V supply. Find the resistance of  the bulb.
  • डी ब्राग्ली द्रव्य तरंगे क्या है? डी ब्राग्ली तरंग समीकरण लिखिए। What is de-broglie matter wave. Write de-broglie wave relation.
  • विद्युत सेल किसे कहते है ? उदाहरण दीजिए। What is an electric cell? give example.
  • अपवर्ती दूरदर्शी एवं परावर्ती दूरदर्शी में दो अंतर लिखिए। Write any two difference between refractive telescope and refractive reflective telescope.
  • A light bulb is related at 200 W for a 220 V supply. Find the rms current through the bulb.
  • समस्थानिक किसे कहते हैं? हाइड्रोजन के कोई दो समस्थानिकों लिखिए। What is isotopes ? Write any two isotopes of hydrogen atom.
  • मूल आवेश किसे कहते हैं। इसका मान कितना होता है। What is a fundamental charge ? Write its value.
  • सदिश रूप में बायो सेवर्ट व्यंजक लिखिए। Write Bio-savart expansion in vector form.

3 Marks Questions

  • किसी उत्तल लेंस की वायु में फोकस दूरी 20 cm है। जल में इसकी फोकस दूरी क्या है? (वायु-जल का अपवर्तनांक 1.33 तथा वायु-काँच का अपवर्तनांक 1.5 है।) A convex lens has 20 cm focal length in air. What is focal length in water? (Refractive index of air-water 1.33, refractive index for air-glass = 1.5)
  • विद्युत वाहक बल एवं विभवान्तर में कोई तीन अंतर लिखिए। Write any three differences between electromotive force and potential difference.
  • सामर्थ्य 100 वॉट एवं 400 वॉट के दो बल्यों के प्रतिरोधों की तुलना कीजिए यदि इनकी वोल्टता समान है। Compare the resistance of 100 watt and 400 watt of two bulbs if their voltage is same.
  • किसी चालक के प्रतिरोध एवं विशिष्ट प्रतिरोध में तीन अंतर लिखिए।
  • P-N संधि डायोड किसे कहते हैं? पूर्ण तरंग दिष्टकारी के रूप में इसके उपयोग को चित्र बताकर समझाइए। What is P-N junction diode? Describe its use as a full wave rectifier with diagram.
  • किसी चालक तार की लम्बाई को मूल लम्बाई का आधा कर देने पर एवं अनुप्रस्थ काट क्षेत्रफल दोगुना करने पर प्रतिरोध कितना हो जायेगा। What will be the resistance of a wire if their length change to half of their original length and cross sectional area change two times of original.
  • किसी चालक की धारिता से क्या तात्पर्य है। चालक की धारिता को प्रभावित करने वाले कारक लिखिए।What is Capacity of a conductor? Write the factor affecting the capacity of a conductor.
  • निज अर्धचालक एवं बाह्य अर्धचालक में अंतर लिखिए। Write the differences between intrinsic semiconductor and extrinsic semi conductor.

5 Marks Questions

  • ट्रांसफॉमर किसे कहते हैं? इसके सिद्धांत एवं इसमें होने वाली ऊर्जा क्षय को समझाइए । What is Transformer? Describe its principle and different types of energy losses in it.
  • Derive the two below expression.

MP Board Physics Paper 2024 Class 12 with Answer key_160.1

  • स्वप्रेरकत्व किसे कहते हैं? एक परिनालिका के स्वप्रेरकत्व के लिये व्यंजक व्युत्पन्न कीजिए । इसके मान को प्रभावित करने वाले कारक लिखिए। What is Self inductance? Derive an expression for the self inductance of solenoid. Also write the factor affecting it.

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When will MP Board Physics Paper 2024 Class 12 be available?

MP Board Physics Paper 2024 PDf is updated here on 12th February 2024.

Where can I find Class 12th MP Board Physics Paper?

MP Board Physics Answer Key PDF is uploaded in this post. You can download it without registration.

How was the MP Board Physics paper 2024 level?

The MP Board physics paper 2024 was easy to moderate level.

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MP Board Physics Paper 2024 Class 12 with Answer key_170.1

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MP Board Physics Paper 2024 Class 12 with Answer key_330.1

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MP Board Physics Paper 2024 Class 12 with Answer key_340.1

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  1. Physics Class 12 CBSE Solved Sample Papers with Answers, Solutions

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  1. Class 12th Physics Answer Key 2024 || Bihar Board Class 12th Physics Answer Key 2024

  2. Class 11th, First year Physics Chapter no: 02 Numerical Problems

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  4. Physics Class 12 Subjective Question Answer 2024 For Bihar Board Exam 2024

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  6. 12th Physics Important Problems|Chapter-1,2,3|First Mid term 2023

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