Class 12 Physics NCERT Solutions: Free PDF - Embibe
  • Written By Varsha
  • Last Modified 03-08-2022
  • Written By Varsha
  • Last Modified 03-08-2022

NCERT Solutions for Class 12 Physics

NCERT Solutions for Class 12 Physics: NCERT Solutions for Class 12 Physics will help students in preparing for board examinations. The direct link to download NCERT solutions for Class 12 Physics PDF can be found on this page. Students can follow this solution set to understand the correct approach to answer the questions in the exercise. However, the students must go through all the topics included in the chapter before they start solving the questions from the exercise.

The academic experts prepare NCERT Solution sets at Embibe. This Class 12 Physics NCERT solution set will help students understand the concepts related to this chapter and further help them prepare for their boards and entrance examinations.

NCERT Solutions for Class 12 Physics: Overview

Before knowing the solutions for all the chapters of Class 12 Physics, let us have an overview of all the chapters provided in the CBSE Class 12 Physics textbook.

Chapter NumberTopic Name
Chapter 1Electric Charges and Field
Chapter 2Electrostatic Potential and Capacitance
Chapter 3Current Electricity
Chapter 4Moving Charges and Magnetism
Chapter 5Magnetism and Matter
Chapter 6Electromagnetic Induction
Chapter 7Alternating Current
Chapter 8Electromagnetic Waves
Chapter 9Ray Optics and Optical Instruments
Chapter 10Wave Optics
Chapter 11Dual Nature of Radiation and Matter
Chapter 12Atoms
Chapter 13Nuclei
Chapter 14Semiconductor Electronics: Materials, Devices, and Simple Circuits
Chapter 15Communication Systems

NCERT Class 12th Physics Chapter-wise Solutions PDF

Get the chapter-wise Physics NCERT Class 12 PDF Solutions from here. Direct links have been provided to download the solutions for every chapter of the NCERT Class 12 Physics book to help you start your preparation accordingly. You can click on any chapter given below to download the respective NCERT Solutions for Physics Class 12 chapters:

Chapter 1 – Electric Charges and Field: We all have the experience of seeing a spark or hearing a crackle when we take off our synthetic clothes or sweaters, particularly in dry weather. Have you ever tried to find any explanation for this phenomenon? This is because of the electric discharge. Another common example of electric discharge is the lightning that we see in the sky during thunderstorms.

We also experience a sensation of an electric shock either while opening the door of a car or holding the iron bar of a bus after sliding from our seats. The reason for these experiences is the discharge of electric charges through our body, which were accumulated due to the rubbing of insulating surfaces. You might have also heard that this is due to the generation of static electricity. This is the topic exactly we are going to discuss in this chapter. Static means anything that does not move or change with time. Electrostatics deals with the study of forces, fields, and potentials arising from static charges.

Download: NCERT Solutions Class 12 Physics Chapter 1

Chapter 2 – Electrostatic Potential and Capacitance: The notion of potential energy is not a new concept to you. When an external force acts on a body against a spring or the gravitational force, the work done during that moment is stored as the body’s potential energy. In the absence of such external force, the body moves to gain kinetic energy and loses the potential energy at the same time. This causes a balance between the two energies.

This chapter will teach you more about conservative forces such as spring and gravitational forces. The potential at a point is basically the work done per unit charge in bringing a charge from infinity to that point. In this chapter, you can look for concepts such as electrostatic force between charges, capacitor, electric field, torque, etc. Class 12 Physics Chapter 2 NCERT solutions have been provided in this article.

Download: NCERT Solutions Class 12 Physics Chapter 2

Chapter 3 – Current Electricity: Charges that are in motion develop an electric current in many situations, such as lightning. Lightning is the flow of charges from clouds to the earth through the atmosphere. Even in our daily lives, we see the charges flowing through many devices steadily, such as torches and cell-driven clocks. But currents are not always steady or do not obey the law of vector addition.

Homogenous conductors like silver or semiconductors obey the famous law, i.e., Ohm’s law, within some range of electric field. This chapter will have a lot of problem-solving questions, and students must pay attention while learning the derivations from each law to solve them. While solving, if the students come across a doubt, they can go through the NCERT solutions for Class 12 Physics Chapter 3 solved by the Embibe experts from the link given above.

Download: NCERT Solutions Class 12 Physics Chapter 3

Chapter 4 – Moving Charges and Magnetism: It was only 200 years ago, Hans Christian Oersted discovered the relation between electricity and magnetism. Fundamentally, electrostatic field lines originate at a positive charge and terminate at a negative charge or fade at infinity. Magnetic field lines always form closed loops.  This chapter will help you understand the laws of obeying electricity and magnetism.

Also, students will see how the magnetic field exerts forces on moving charged particles like electrons, protons, and current-carrying wires. This is one of the important chapters for the Class 12 exams and higher studies. This chapter will provide a good foundation for students who wish to pursue higher studies in the electrical field.

Download: NCERT Solutions Class 12 Physics Chapter 4

Chapter 5 – Magnetism and Matter: Earth’s magnetism is a universal phenomenon that has been observed by mankind since the beginning. We also know that the earth itself is a huge magnet with magnetic fields pointing at the geographic locations of the south and north. Beginning from the bar magnet, you will come across the magnetic field lines, magnetic moment, magnetic field strength, susceptibility and more.

Candidates who are studying this chapter must take down notes from every section. This will, in turn, help to solve the questions from the chapter. Students can also find the NCERT Solutions for Class 12 Physics Chapter 5 in case of any doubts.

Download: NCERT Solutions Class 12 Physics Chapter 5

Chapter 6 – Electromagnetic Induction: Following the trend, even this chapter deals with the two most important concepts such as electricity and magnetism in relation to each other. Pioneering experiments were held during the 19th century regarding electromagnetism.

Experiments of Faraday and Henry, magnetic flux, and motion electromotive force are clearly explained in this chapter. Going through this chapter and then attempting the related questions will help in memorizing the concepts better.

Download: NCERT Solutions Class 12 Physics Chapter 6

Chapter 7 – Alternating Current: The phrases AC voltage and AC current are contradictory and redundant as they literally mean alternating current voltage and alternating current. Today, most of the electrical devices we use require AC voltage. This is mainly because most of the electrical energy sold by power companies is transmitted and distributed as alternating current.

Download: NCERT Solutions Class 12 Physics Chapter 7

Chapter 8 – Electromagnetic Waves: The basic differences between various types of electromagnetic waves are explained in this chapter. For electromagnetic waves, the differences can be identified in their wavelengths or frequencies since all of them travel through a vacuum at the same speed. Consequently, the waves differ considerably in their mode of interaction with matter. 

The oscillating fields of an electromagnetic wave can accelerate charges and can produce oscillating currents. Therefore, an apparatus designed to detect electromagnetic waves is based on this fact. Hertz’s original ‘receiver’ worked in exactly this way. The same basic principle is utilized in practically all modern receiving devices. You will learn such interesting concepts from this chapter on Electromagnetic trends.

Download: NCERT Solutions Class 12 Physics Chapter 8

Chapter 9 – Ray Optics and Optical Instruments: Electromagnetic radiation belonging to this region of the spectrum between the wavelength of 400 nm to 750 nm is called light. Light travels with enormous speed and second, that it travels in a straight line.

The path in which light travels is called a ray of light and a bundle of such rays constitutes a beam of light. Also, the light energy is concentrated in tiny particles called corpuscles. The laws of reflection and refraction are true for all surfaces and pairs of media at the point of the incidence. In this chapter, you will understand the concepts of refraction and reflection in detail.

Download: NCERT Solutions Class 12 Physics Chapter 9

Chapter 10 – Wave Optics: Followed by Chapter 9 on ray optics, this chapter will deal with one of the most important principles in the area of ray optics. The corpuscular model predicted that if the ray of light bends towards the normal, then the speed of light would be greater in the second medium. Waves from a point source spread out in all directions, while the light was seen to travel along with narrow rays.

It required the insight and experiment of Huygens, Young, and Fresnel to understand how a wave theory could explain all aspects of the behaviour of light. In this chapter, you will know the Huygens principle clearly and derive the laws of reflection and refraction along with the phenomenon of interference based on the principle of superposition.

Download: NCERT Solutions Class 12 Physics Chapter 10

Chapter 11 – Dual Nature of Radiation and Matter: Through this chapter, you will understand the photoelectric effect in detail. The minimum energy needed by an electron to come out from a metal surface is called the work function of the metal. Energy (greater than the work function (φο ) required for electron emission from the metal surface can be supplied by suitably heating or applying a strong electric field or irradiating it by the light of suitable frequency.

The photoelectric effect is the phenomenon of emission of electrons by metals when illuminated by a light of suitable frequency. Certain metals respond to ultraviolet light, while others are sensitive even to visible light. The photoelectric effect involves the conversion of light energy into electrical energy. It follows the law of conservation of energy. The photoelectric emission is an instantaneous process and possesses certain special features.

Download: NCERT Solutions Class 12 Physics Chapter 11

Chapter 12 – Atoms: The first atom model was proposed by J.J. Thomson in 1898. As per this model, the atom’s positive charge is distributed uniformly throughout the atom’s volume, and the negatively charged electrons are embedded in it like seeds in a watermelon. This model was picturesquely called the plum pudding model of the atom. Another such model is Rutherford’s model. Both Thomson’s and Rutherford’s models constitute an unstable system.

Thomson’s model is unstable electrostatically, while Rutherford’s model is unstable because of the electromagnetic radiation of orbiting electrons. Another such model is Bohr’s model where the orbital picture of the hydrogen atom was inconsistent with the Uncertainty Principle. It was replaced by modern quantum mechanics in which Bohr’s orbits are regions where the electron may be found with a large probability. To know more about this chapter, go through NCERT Solutions for Physics Class 12 Chapter 12.

Download: NCERT Solutions Class 12 Physics Chapter 12

Chapter 13 – Nuclei: Does the nucleus have a structure, just as the atom does? If so, what are the constituents of the nucleus? Chadwick was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron. Whereas Rutherford was the engineer who postulated the existence of the atomic nucleus.

In this chapter, you will get in-depth knowledge of the Nucleus. You will learn that the density of nuclear matter is independent of the nucleus’s size whereas the atom’s mass density does not follow this rule. The mass of a neutron is now known to a high degree of accuracy and is expected to be equal to the total mass of its individual protons and neutrons.

Download: NCERT Solutions Class 12 Physics Chapter 13

Chapter 14 – Semiconductor Electronics: Materials, Devices, and Simple Circuits – Devices in which a controlled flow of electrons can be collected are called the basic building blocks of all electronic circuits. Before the discovery of transistors in 1948, devices called vacuum tubes had two electrodes, namely anode and cathode. In a vacuum tube, the electrons are supplied by a heated cathode, and the controlled flow of these electrons in a vacuum is obtained by varying the voltage between its different electrodes.

The vacuum is the essential element in the inter-electrode space. Otherwise, the moving electrons may lose their energy on collision with the air molecules in their path. In these devices, the electrons can flow only from the cathode to the anode. The seed of the development of modern solid-state semiconductor electronics goes back to the 1930s when it was realized that some solid-state semiconductors and their junctions offer the possibility of controlling the number and the direction of flow of charge carriers through them. This chapter will introduce you to the basic concepts of Semiconductor Physics, such as junction diode.

Download: NCERT Solutions Class 12 Physics Chapter 14

Chapter 15 – Communication Systems: In a communication system, the transmitter is located at one place, the receiver is located at some other place (far or near) separate from the transmitter and the channel is the physical medium that connects them. Depending upon the type of communication system, a channel may be in the form of wires or cables connecting the transmitter and the receiver or it may be wireless. The purpose of the transmitter is to convert the message signal produced by the source of information into a form suitable for transmission through the channel.

If the output of the information source is a non-electrical signal like a voice signal, a transducer converts it to an electrical form before giving it as an input to the transmitter. When a transmitted signal propagates along the channel, it may get distorted due to channel imperfections. Moreover, noise adds to the transmitted signal and the receiver receives a corrupted version of the transmitted signal. The receiver has the task of operating on the received signal. It reconstructs a recognizable form of the original message signal for delivering it to the user of information. In this chapter, students will learn in detail about the Communication System.

Download: NCERT Solutions Class 12 Physics Chapter 15

Benefits of Class 12 Physics NCERT Solutions

These NCERT Solutions for Class 12 Physics (Physics Class 12 NCERT solutions) provided on this page can serve you a lot of advantages:

  • Every solution provided here is solved by the top academic experts of Embibe. These solutions strictly adhere to the NCERT guidelines. Therefore, students who are preparing for board exams or solving their Class assignments can refer to these solutions without any doubt.
  • This article covers each and every question given in your CBSE NCERT Class 12 Physics book.
  • As these solutions are prepared as per the CBSE marking scheme, students can write these solutions in their board exams without any problem.
  • The Class 12 Physics NCERT Solutions are available as PDFs. Hence, you can download these files on your device and access the PDFs any time and from anywhere at your convenience.
  • All the solutions given here are free of any cost. Also, these can be downloaded on your device without any difficulty.
  • These NCERT Physics Class 12 solutions can help students prepare for various competitive entrance exams; for example, AIIMS, NEET, JEE Main, and others.

FAQs on CBSE NCERT Solutions for Class 12 Physics

Q.1: Why are NCERT Solutions important?
Ans: NCERT Solutions are important when it comes to appearing for either your board or competitive exams. Whenever you get stuck in any of the questions, you can refer to these NCERT solutions to understand the concept. Then, you can revise and attempt the question again.

Q.2: Where can I practice for Class 12 Physics mock questions?
Ans: You can practice free Class 12 Physics chapter-wise tests at Embibe.

Q.3: Can I refer to these NCERT Solutions for Class 12th Physics for my JEE Main preparations?
Ans: Yes, Class 12 Physics NCERT Solutions will be helpful for your JEE Main as well as NEET preparations.

Q.4: Are Class 12 Physics NCERT solutions helpful for my board exams?
Ans: Yes, these NCERT Solutions are prepared with the Class 12 Board guidelines. Therefore, these will be helpful in your board exams.

Q.5: From where can I download all the NCERT Solutions for Class 12 Physics?
Ans: Students can download the Class 12th Physics NCERT Solutions from this page.

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