NCERT Solutions For Class 12 Physics

# NCERT Solutions For Class 12 Physics

For students who are having trouble answering questions from the textbook, NCERT Solutions for Class 12 Physics is the ideal study material. The solutions are designed to be thorough to aid pupils in grasping subjects more quickly. The primary goal of developing solutions is to make exam preparation easier for pupils. The NCERT Solutions are written by subject matter experts in an easy-to-understand format to provide students the confidence they need to take the board test without worry. With the help of this solution, students will better understand the concepts depending on the marks weightage assigned by the CBSE.

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The solutions to all chapters are accessible here for CBSE students to review. Follow the links below to access free NCERT Physics Solutions (Class 12) Chapters 1-15. The solutions are available for free online viewing or download in PDF format. Click the “Obtain PDF” button at the top of each of the chapter pages mentioned below to download a PDF of the NCERT Solutions for Class 12 Physics for that chapter.

NCERT Solutions for Class 12 Physics Chapter wise:

The majority of students do not comprehend the concept but attempt to memories it for the sake of grades. This is not always effective. When it comes to board exam preparation, every concept must be learned and understood. As a result, it is critical to employ the appropriate reference material for this purpose. By referring to the NCERT Solutions provided at Infinity Learn, students may easily solve textbook questions.

NCERT Solutions Class 12 Physics

Physics in NCERT Solutions Class 12 is vital not only for board exams but also for competitive tests. Faculty have curated the solutions to assist students in grasping more topics, regardless of their IQ level. According to the CBSE syllabus and test format, the solutions are written in easy language to aid pupils. The solutions cover every chapter in the most recent NCERT textbook. To deliver accurate information to the students, the solutions explain a variety of fundamental concepts. Students can get the NCERT solutions provided by our experts both online and offline.

NCERT Physics Class 12 Topics and Exercises of Chapters

Chapter 1: Electric Charges and Fields: Term 1

This chapter will assist you in resolving questions involving the calculation of forces between two charged particles separated by a distance. You will also discover the reason for the charge that occurs in materials when they rub against one another, such as when rubbing a silk cloth against a glass rod. Do you know why quantization of charges is overlooked in large-scale charges? There are additional concerns about calculating the total charge and dipole moment of a system using torque and electric field.

The following topics were covered:

Charge conservation, Coulomb’s law between two-point charges, forces between multiple charges, superposition notion, and continuous charge distribution are all concepts that can be used to explain charge conservation. Torque on a dipole in a homogeneous electric field, electric field lines, electric dipole, electric field owing to a dipole the application of Gauss’ theorem to find the field due to an infinitely long straight wire and a uniformly charged infinite plane sheet.

Infinity Learn also has the following resources for Class 12 Chapter 1 Electric Charges and Fields.

Chapter 2: Electrostatic Potential and Capacitance – Term I

Using the solutions at Infinity Learn, students will have a basic understanding of the electrostatic potential. This chapter covers the potential energy of a system of charges, the energy stored in a capacitor, and the potential due to an electric dipole. As per the CBSE syllabus, problems involving the effective capacitance of capacitors are also answered in a step-by-step way. To help students, perform well on-board exams, these ideas and numerical are answered in the simplest way possible.

The following topics were covered:

Equipotential surfaces, the electrical potential energy of a system of two point charges and of an electric dipole in an electrostatic field; electric potential, potential difference, electric potential due to a point charge, a dipole, and a system of charges; Inside a conductor, there are conductors and insulators, as well as free and bound charges. Dielectrics and electric polarization, capacitors and capacitance, series and parallel capacitors, the capacitance of a parallel plate capacitor with and without dielectric medium between the plates, capacitor.

Infinity Learn also has the following resources for Class 12 Chapter 2 Electrostatic Potential and Capacitance.

Chapter 3: Current Electricity – Term I

Students will learn the meanings of key terms such as conductance, resistance, cell EMF, drift velocity, conductance, resistivity, and internal resistance in this chapter. Students will also get to know the graphing of resistivity for semiconductors, metals, and alloys. It will allow you to convert complex circuits into simple series and parallel circuits with ease. The concepts of meter bridge or potentiometer are explained in brief under this chapter. Numerous problems based on these concepts are available for practice at the end of the chapter.

The following topics were covered:

Ohm’s law, electrical resistance, V-I characteristics (linear and nonlinear), electrical energy and power, electrical resistivity, and conductivity; temperature dependency of resistance. The Internal resistance of a cell, potential difference, and emf of a cell, the combination cells-combination and in parallel, Kirchhoff’s laws and simple applications, Wheatstone bridge, meter bridge (qualitative ideas only). Principle and applications of the potentiometer for measuring potential difference and comparing EMF of two cells; measurement of a cell’s internal resistance (qualitative ideas only).

Infinity Learn also has the following resources for Class 12 Chapter 3 Current Electricity.

Chapter 4: Moving Charges and Magnetism – Term I

Students can learn about various graphs, diagrams, drawings, and examples from everyday life to aid with their retention of information. The origins of notions like Ampere’s Circuital Law and forces between two current-carrying wires are also thoroughly explored. At the end of the chapter, there are problems based on these principles that carry a higher grade and should be practiced on a regular basis.

The following topics were covered:

Concept of a magnetic field, Oersted’s experiment. Boit – Savart law and its application to current carrying circular loop. The application of Ampere’s law to an indefinitely long straight wire. Force on a moving charge in homogenous magnetic and electric fields, straight and toroidal solenoids (only qualitative treatment). In a uniform magnetic field, the force on a current-carrying conductor, the force between two parallel current-carrying conductors—definition of an ampere, torque experienced by a current loop in a moving coil galvanometer—current sensitivity and conversion to ammeter and voltmeter; uniform magnetic field

Infinity Learn also has the following resources for Class 12 Chapter 4 Moving Charges and Magnetism.

Chapter 5: Magnetism and Matter – Term I

This chapter contains questions on numerous variables, how to calculate the earth’s magnetic field, and the effects of compass direction at the poles. Want to know why the earth’s magnetic field fluctuates from place to place in space? Infinity Learn has NCERT Solutions for you to use. You will also learn about interstellar space and the faint magnetic field that exists there. Another essential topic covered in this chapter is the magnetic moment of a solenoid.

The following topics were covered:

The magnetic dipole moment of a revolving electron, magnetic dipole moment of a current loop, bar magnet as an equivalent solenoid, magnetic field lines; earth’s magnetic field, and magnetic components

Infinity Learn also has the following resources for Class 12 Chapter 5 Magnetism and Matter.

Chapter 6: Electromagnetic Induction – Term I

In this chapter, the concepts of electricity and magnetism are combined. Faraday’s law and Lenz’s law are the two most important notions here. Definitions and exercises based on these rules are presented in a methodical manner to assist students in grasping the topics. When addressing issues from the practice questions, keep in mind the direction of the induced emf and magnetic field.

The topics covered in this chapter are listed below:

• Electromagnetic induction
• Induced EMF and current
• Lenz’s Law, Eddy currents.
• Self and mutual induction.

Infinity Learn also has the following resources for Class 12 Chapter 6 Electromagnetic Induction.

Chapter 7: Alternating Current

In this chapter, the AC voltage which is applied to a resistor, inductor, capacitor, and series LCR circuit is discussed. The textbook’s varied pictures and graphs assist you in fully comprehending the idea. Students can answer the complicated questions and problems that will arise on the board exams if they study this chapter on a regular basis. The transformer is the key concept here. This chapter’s completion will assist students in achieving good scores not just in board exams, but also in competitive tests.

The topics covered in this chapter are listed below:

• Alternating currents,
• Peak, and RMS value of alternating current/voltage
• Reactance and impedance;
• LC oscillations (qualitative treatment only),
• LCR series circuit, resonance;
• Power in AC circuits.
• AC generator and transformer.

Infinity Learn also has the following resources for Class 12 Chapter 7 Alternating Current.

Chapter 8: Electromagnetic Waves – Term II

The physical attraction between electrically charged particles is known as electromagnetism. When a capacitor is charged from the outside, a potential difference between two capacitive plates exists, which can be measured together with displacement. Students will also learn about Kirchhoff’s norms, which are important for getting good grades on board exams. The conduction current’s RMS value and the parallels between displacement and conduction current are briefly discussed here.

The following topics were covered:

The characteristics of electromagnetic waves, Electromagnetic waves have a transverse nature (just qualitative notions). The electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, and gamma rays), as well as basic information on its applications.

Infinity Learn also has the following resources for Class 12 Chapter 8 Electromagnetic Waves.

Chapter 9: Ray Optics and Optical Instruments – Term II

Using the ray picture, students will study the processes of light refraction, reflection, and dispersion in this chapter. The picture production is well discussed in this chapter utilizing the rules of reflection and refraction. This chapter covers the construction and operation of optical equipment, including the human eye. Students will learn about natural phenomena caused by sunshine, which is crucial in terms of exams.

The following topics were covered in this chapter:

• Refraction of light
• Total internal reflection and its applications
• Optical Fibers
• Refraction at spherical surfaces
• Lenses
• Thin lens formula
• Lens maker’s formula
• Magnification
• Power of a lens
• A combination of thin lenses in contact.
• Refraction of light through a prism.
• Microscopes and astronomical telescopes (reflecting and refracting) and their magnification powers, which are examples of optical instruments.

Infinity Learn also has the following resources for Class 12 Chapter 9 Ray Optics and Optical Instruments.

Chapter 10: Wave Optics – Term II

Huygens’ laws of reflection and refraction are the concept that receives the most points in this chapter. The angular width expression and Brewster’s Law are discussed with appropriate examples to provide students with a clear understanding. Students are strongly encouraged to complete all the problems in the NCERT Textbook in addition to the theory and derivations. The Doppler Effect is thoroughly discussed to improve students’ conceptual understanding.

The following topics were covered:

Wavefronts and Huygen’s concept are used to reflect and refract plane waves at a plane surface. Interference, an experiment of Young’s double-slit and expression for the phenomenon fringe width, coherent sources of light and continuous interference of light, single slit diffraction, the width of the centre maximum.

Infinity Learn also has the following resources for Class 12 Chapter 10 Wave Optics.

Chapter 11: Dual Nature of Radiation and Matter – Term II

Electron emission, photoelectric effect, experimental effect, Einstein’s Photoelectric equation, and the wave nature of matter are all covered in this chapter. Numerical should also be given greater weight because they will allow you to earn more points. The majority of the textbook questions are likely to be on the final exam. Students will be able to get amazing marks and achieve their career goals if they have a firm grasp of this chapter.

The following topics were covered:

Dual nature of radiation, Photoelectric effect, Hertz, and Lenard’s observations; Einstein’s photoelectric equation-particle nature of light. Experimental study about the photoelectric effect, Matter waves, wave nature of the particles, de-Broglie relation.

Infinity Learn also has the following resources for Class 12 Chapter 11 Dual Nature of Radiation and Matter.

Chapter 12: Atoms – Term II

Class 12 is a crucial milestone in a student’s life since it will guide them in choosing the correct professional route. The essential topic in this chapter is the Bohr Model of the Hydrogen Atom. Students will only be able to achieve good grades if they regularly learn and revise the ideas. Physics is a subject that demands extra practice due to the numerous issues it presents. To get good scores, you should memorize the main formulas and steps to follow when solving issues.

The following topics were covered:

Alpha-particle scattering experiment; Rutherford’s model of atom; Bohr model, energy levels, hydrogen spectrum.

Infinity Learn also has the following resources for Class 12 Chapter 12 Atoms.

Chapter 13: Nuclei – Term II

Atomic masses and nucleus composition, nucleus size, mass-energy and nuclear binding energy, nuclear force, radioactivity, and nuclear energy are all treated in this chapter. One of the greatest ways to study for board exams in Physics is to take notes and highlight significant formulas and terminology. All the concepts are more important because they will be used to answer questions in competitive tests.

The following topics were covered:

• Composition and size of the nucleus
• Nuclear force
• Mass-energy relation
• Mass defect
• Nuclear fission
• Nuclear fusion.

Infinity Learn also has the following resources for Class 12 Chapter 13 Nuclei.

Chapter 14: Semiconductor Electronics: Materials, Devices, and Simple Circuits – Term II

The majority of the questions in this chapter will revolve around n-type semiconductors, carriers, and dopants. This chapter also includes True or False questions on carbon, silicon, and germanium semiconductors, as well as an explanation of how to determine the energy gap. Finding the output frequency of a half-wave and full-wave rectifier will be a topic of discussion. If two amplifiers are linked in series, you can also find the output signal. Additional tasks for determining the number of holes and electrons in indium, silicon, and arsenic atoms are included.

The following topics were covered:

Conductors, semiconductors, and insulators all have energy bands (qualitative ideas only) Semiconductor diode – forward and reverse bias I-V characteristics, diode as a rectifier LEDs, photodiodes, and solar cells are examples of special-purpose p-n junction diodes.

Infinity Learn also has the following resources for Class 12 Chapter 14 Semiconductor Electronics: Materials, Devices, and Simple Circuits.

Infinity Learn is a learning organization, therefore we understand how important study materials are and how they affect academic performance. As a result, we created Class 12 NCERT Solutions, a learning resource targeted at assisting students in studying and achieving their goals.

CBSE Marking Scheme 2021-22

Board exams will be taken twice throughout a student’s lifetime. Class 10 is one, and Class 12 is the other. The scores earned in Class 10 assist students in understanding the topic in which they excel, and the marks earned in Class 12 assist them in planning their future. The CBSE board has divided the complete syllabus into two terms to make it easier for pupils to study all the ideas. Students would be able to comprehend the chapters that are worth more marks and practice on them properly after seeing the CBSE board’s redesigned course structure.

Term I and Term II: CBSE Class 12 Physics Syllabus Course Structure 2021-22

 Units Term – I (Chapters) Marks I Electrostatics: Chapter- 1 and 2 17 II Current Electricity: Chapter- 3 III Magnetic Effects of Current and Magnetism: Chapter 4 and 5 18 IV Electromagnetic Induction and Alternating Currents: Chapter 6 and 7 Units Term – 2 (Chapters) Marks V Electromagnetic Waves: Chapter 8 17 VI Optics: Chapter 9 and 10 VII Dual Nature of Radiation and Matter: Chapter 11 11 VIII Atoms and Nuclei: Chapter 12 and 13 IX Electronic Devices: Chapter 14 7 Total Theory (Term – I and Term – II) 70 Practical Term – I 15 Practical Term – II 15 Total 100

Class 12 Physics NCERT Solutions

Physics NCERT Solutions for Class 12 is a more useful information resource than any other. Extensive explanations, thorough solutions, descriptive pictures, and more are all available. In addition, we provide correct and up-to-date answers to all the NCERT textbook exercise questions.

Students can also study at their leisure with the help of downloadable files.

Why Do Toppers Prefer Infinity Learn NCERT Solutions?

Many students say that Infinity Learn’s NCERT Solutions are the most user-friendly solutions available on the internet. We are the go-to choice for most CBSE students because of the trustworthiness and accuracy of our solutions. Students can now easily complete the NCERT Class 12 Physics Syllabus by using Infinity Learn’s solutions. The following are some of the key features of the NCERT Solutions we supply.

• The answers are created by highly knowledgeable teachers.

Physics is a discipline that encompasses a wide range of principles with real-world applications. Students are strongly advised to consult the greatest study material available online to grasp these ideas. We at Infinity Learn to curate the solutions with Class 12 students’ comprehension abilities in mind. As a result, the solutions are dependable and precise, as they are entirely based on the CBSE board’s exam schedule.

• Provides a wide range of problems to practice with.

When it comes to final exam preparation, the only way to get a high score is to practice. For this reason, we at Infinity Learn have created chapter-by-chapter solutions that students may utilize both online and offline. Students can rely on the solutions to help them prepare for their board exams because they are highly authentic.

• It is possible to access it at any time and from any location.

The 12th-grade exam is a significant milestone in a student’s life. As a result, selecting the best study material to meet all their requirements is critical. When it comes to board exam preparation, we at Infinity Learn have developed methods to help students gain confidence in their ability to answer complicated questions with ease. Infinity Learn provides a free solution, which can be used anywhere and at any time when answering the textbook’s practice questions.

Benefits of Physics NCERT Solutions Class 12

• Experienced teachers conducted research and wrote the solutions.
• In each chapter, there are new value-based questions with answers.
• Jargon-free and simple language.
• The content has been created in accordance with the CBSE curriculum 2021-22.
• The Coverage of essential ideas is extensive.
• The most useful content for preparing for CBSE board exams.

NCERT Solutions for Class 12 Physics: A Comprehensive Analysis

The NCERT Textbooks are noted for their clarity and plain explanations of ideas. These textbooks are excellent for CBSE Class 12 students. It consists of multiple-choice questions that assess their conceptual grasp.

The Physics NCERT Solutions Class 12 contains all the necessary material as well as basic ideas to assist students in preparing for medical entrance tests such as the NEET.

Practice Questions for NCERT Class 12 Physics

1. (a) Two cells of emf and have their internal resistances and, respectively. Deduce a formula for the parallel combination’s equivalent emf and internal resistance when connected across an external resistance R. Assume that the two cells are mutually supportive.

(b) In case the two cells are identical, each of emf and internal resistance, calculate the voltage across the external resistance.

2. (a) Write an expression of magnetic moment associated with a current (I) carrying a circular coil of radius having turns.

(b) Consider the above-mentioned coil placed in the YZ plane with its center at the origin. Derive an expression for the value of the magnetic field due to it at nt.

3. Draw a circuit diagram and explain the working of a Zener diode as a dc voltage regulator with the help of its characteristics.

4. What is the purpose of heavy doping of – and -sides of a Zener diode?

5. Draw the ray diagram of an astronomical telescope when the final image is formed at infinity. Write the expression for the telescope’s resolving power.

Frequently Asked Questions on NCERT Solutions for Class 12 Physics

##### What role does NCERT Class 12 Physics Solutions have in exam preparation?

The questions in NCERT textbooks can be a major help in ensuring that you study properly and perform well in exams and assessments. Students can begin practicing NCERT Solutions Class 12 Physics right away, which will result in improved academic achievement in the future. As a result, a firm grasp of the syllabus would be developed.

##### How to achieve good marks in Class 12 Physics?

Students can acquire excellent marks in the finals by referring to INFINITY study NCERT Solutions for Class 12 Physics. Learning and scoring well in Physics necessitates a lot of practice. To perform well and improve their question-solving ability, students must look over NCERT Solutions completely before the final exams.

##### How can I get NCERT Physics Solutions for Class 12?

To see the solutions, go to the Infinity Learn website and select NCERT Solutions, then select class 12 and then subject. These solutions provided by us cover all these concepts, with detailed explanations.

##### Do Infinity Learn NCERT Solutions for Class 12 Physics have better quality?

NCERT Solutions for Class 12 Physics are created by highly experienced topic experts who have extensive experience in the field. They curate the solutions by strictly adhering to the latest CBSE board's syllabus and norms. The questions from the NCERT textbook are addressed comprehensively so that students may understand the ideas quickly.

##### Does Infinity Learn NCERT Solutions for Class 12 Physics help students get full marks in their board exams?

Yes, of course, NCERT Solutions for Class 12 Physics is one of the top study materials available on the internet. When students are unable to find a proper response to textbook questions, they can resort to subject-specific and chapter-specific solutions. It also enhances their capacity to respond to complex questions that may appear on board exams. Apart from the board student will also get help in board exams.

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