 ## CBSE | NCERT solutions for class 12 Physics

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# NCERT Solution for class 12 Physics

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The NCERT Solution for 12 Physics PDF are as per the sullabus and helps students solve the exercises given in the textbooks.

## NCERT Solution for class 12 Physics

### Chapter 1: Electric Charges And Fields

1.1 Introduction to Electric Charges and Fields

1.2 Electric Charge

1.3 Conductors and Insulators

1.4 Charging by Induction

1.5 Basic Properties of Electric Charge

1.6 Coulomb’s Law

1.7 Forces between Multiple Charges

1.8 Electric Field

1.9 Electric Field Lines

1.10 Electric Flux

1.11 Electric Dipole

1.12 Dipole in a Uniform External Field

1.13 Continuous Charge Distribution

1.14 Gauss’s Law And Its Applications

### Chapter 2: Electrostatic Potential And Capacitance

2.1 Introduction to Electrostatic Potential And Capacitance

2.2 Electrostatic Potential

2.3 Potential due to a Point Charge

2.4 Potential due to an Electric Dipole

2.5 Potential due to a System of Charges

2.6 Equipotential Surfaces

2.7 Potential Energy of a System of Charges

2.8 Potential Energy in an External Field

2.9 Electrostatics of Conductors

2.10 Dielectrics and Polarisation

2.11 Capacitors and Capacitance

2.12 The Parallel Plate Capacitor

2.13 Effect of Dielectric on Capacitance

2.14 Combination of Capacitors

2.15 Energy Stored in a Capacitor

2.16 Van de Graaff Generator

### Chapter 3: Current Electricity

3.1 Introduction to Current Electricity

3.2 Electric Current

3.3 Electric Current in Conductors

3.4 Ohm’s Law And Limitations of Ohm’s Law

3.5 Drift of Electrons and the Origin of Resistivity

3.6 Resistivity of Various Materials

3.7 Temperature Dependance of Resistivity

3.8 Electrical Energy, Power

3.9 Combination of Resistors-Series and Parallel

3.10 Cells, emf, Internal Resistance

3.11 Cells in Series and in Parallel

3.12 Kirchhoff’s Rules

3.13 Wheatstone Bridge

3.14 Meter Bridge

3.15 Potentiometer

### Chapter 4:Moving Charges and Magnetism

4.1 Introduction

4.2 Magnetic Force

4.3 Motion in a Magnetic Field

4.4 Motion in Combined Electric and Magnetic Fields

4.5 Magnetic Field due to a Current Element, Biot-Savart Law

4.6 Magnetic Field on the Axis of a Circular Current Loop

4.7 Ampere’s Circuital Law

4.8 The Solenoid and the Toroid

4.9 Force between Two Parallel Currents, the Ampere

4.10 Torque on Current Loop, Magnetic Dipole

4.11 The Moving Coil Galvanometer

### Chapter 5:Magnetism and Matter

5.1 Introduction

5.2 The Bar Magnet

5.3 Magnetism and Gauss’s Law

5.4 The Earth’s Magnetism

5.5 Magnetisation and Magnetic Intensity

5.6 Magnetic Properties of Materials

5.7 Permanent Magnets and Electromagnets

### Chapter 6:Electromagnetic Induction

6.1 Introduction6.2 The Experiments of Faraday and Henry

6.3 Magnetic Flux

6.5 Lenz’s Law and Conservation of Energy

6.6 Motional Electromotive Force

6.7 Energy Consideration: A Quantitative Study

6.8 Eddy Currents

6.9 Inductance

6.10 AC Generator

### Chapter 7:Alternating Current

7.1 Introduction

7.2 AC Voltage Applied to a Resistor

7.3 Representation of AC Current and Voltage by Rotating Vectors-Phasors

7.4 AC Voltage Applied to an Inductor

7.5 AC Voltage Applied to a Capacitor

7.6 AC Voltage Applied to a Series LCR Circuit

7.7 Power in AC Circuit: The Power Factor

7.8 LC Oscillations

7.9 Transformers

### Chapter 8:Electromagnetic Waves

8.1 Introduction

8.2 Displacement Current

8.3 Electromagnetic Waves

8.4 Electromagnetic Spectrum

### Chapter 9:Ray Optics and Optical Instruments

9.1 Introduction

9.2 Reflection of Light by Spherical Mirrors

9.3 Refraction

9.4 Total Internal Reflection

9.5 Refraction At Spherical Surfaces and By Lenses

9.6 Refraction through a Prism

9.7 Dispersion by a Prism

9.8 Some Natural Phenomena due to Sunlight

9.9 Optical Instruments

### Chapter 10:Wave Optics

10.1 Introduction

10.2 Huygens Principle

10.3 Refraction and Reflection of Plane Waves using Huygens Principle

10.4 Coherent and Incoherent Addition of Waves

10.5 Interference of Light Waves and Young’s Experiment

10.6 Diffraction

10.7 Polarisation

### Chapter 11:Dual Nature of Radiation and Matter

11.1 Introduction

11.2 Electron Emission

11.3 Photoelectric Effect

11.4 Experimental Study of Photoelectric Effect

11.5 Photoelectric Effect and Wave Theory of Light

11.6 Einstein’s Photoelectric Equation: Energy Quantum of Radiation

11.7 Particle Nature of Light: The Photon

11.8 Wave Nature of Matter

11.9 Davisson and Germer Experiment

### Chapter 12:Atoms

12.1 Introduction

12.2 Alpha-particle Scattering and Rutherford’s Nuclear Model of Atom

12.3 Atomic Spectra

12.4 Bohr Model of the Hydrogen Atom

12.5 The Line Spectra of the Hydrogen Atom

12.6 DE Broglie’s Explanation of Bohr’s Second Postulate of Quantisation

### Chapter 13: Nuclei

13.1 Introduction to Nuclei

13.2 Atomic Masses and Composition of Nucleus

13.3 Size of the Nucleus

13.4 Mass-Energy and Nuclear Binding Energy

13.5 Nuclear Force

13.7 Nuclear Energy

### Chapter 14:Semiconductor Electronics:Materials, Devices and Simple Circuits

14.1 Introduction

14.2 Classification of Metals,Conductors and Semiconductors

14.3 Intrinsic Semiconductor

14.4 Extrinsic Semiconductor

14.5 p-n Junction

14.6 Semiconductor Diode

14.7 Application of Junction Diode as a Rectifier

14.8 Special Purpose p-n Junction Diodes

14.9 Junction Transistor

14.10 Digital Electronics and Logic Gates

14.11 Integrated Circuits

### Chapter 15:Communication Systems

15.1 Introduction to Communication Systems

15.2 Elements of Communication System

15.3 Basic Terminology Used in Electronic Communication Systems

15.4 Bandwidth of Signals

15.5 Bandwidth of Transmission Medium

15.6 Propagation of Electromagnetic Waves

15.7 Modulation and its Necessity

15.8 Amplitude Modulation

15.9 Production of Amplitude Modulated Wave

15.10 Detection of Amplitude Modulated Wave

### Why refer to these articles?

Physics is one of the most interesting subjects which is filled with numerous engaging concepts. The concepts taught in the 11th standard are the fundamentals of the subject. Students must learn these concepts in-depth to develop their skills in the subject and build a strong foundation.

Stay tuned with Gurucool.xyz to learn various interesting concepts of physics, chemistry, biology and mathematics with the help of engaging and interactive video lessons.

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

In this chapter, you will study the concept of electric charges and conservation, Coulomb’s law. Also study the force between charges, and the principle of superposition and continuous charge distribution, electric field and its application, electric dipole, the concept of electric flux, Gauss’s theorem and its applications.

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

In this chapter, you will study about the electric potential and its applications, potential difference, equipotential surfaces, the electrical potential energy of charges in an electrostatic field. You will study about conductors and insulators, free charges and bound charges inside a conductor. Also dielectrics and electric polarisation, capacitors and capacitance, the combination of capacitors in series and in parallel, energy stored in a capacitor.

### NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity

In this chapter, you will learn the concept of electric current, the flow of electric charges in a metallic conductor. The concept of electrical resistance, V-I characteristics, The Kirchhoff’s law and its applications, potentiometer – principle and its applications, Wheatstone bridge, and meter bridge.

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

In this chapter, you will learn the concept of the magnetic field, Oersted’s experiment, Biot – Savart law, Ampere’s law, and their applications, and solenoids, the force on a moving charge, the concept of torque, moving coil galvanometer.

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

This chapter explains you about the magnetic dipole and its moment, the concept of torque on a magnetic dipole; bar magnet as an equivalent solenoid, magnetic field lines, Earth’s magnetic field, and magnetic elements, types of magnetic substances, the concept of electromagnets and factors affecting its strength.

### NCERT Solutions for Class 12 Physics Chapter 6 Electromagnetic Induction

This chapter explains the concept of electromagnetic induction, Faraday’s laws, induced emf and current, Lenz’s Law, Eddy currents, types of induction.

### NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current

In this chapter, you will get to know about alternating currents, peak and RMS value of alternating current/voltage, reactance, and impedance, LC oscillations, LCR series circuit, resonance and power in AC circuits, AC generator and transformer, wattless current.

### NCERT Solutions for Class 12 Physics Chapter 8 Electromagnetic Waves

This chapter explains the basic idea of displacement current, electromagnetic waves and their characteristics and transverse nature. You will also learn the concept of the electromagnetic spectrum including elementary facts and their uses. NCERT Solutions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments

In this chapter, you will study reflection and refraction of light, mirror formula, total internal reflection and its applications, optical fibers, thin lens formula, lens maker’s formula, the concept of magnification, the combination of thin lenses. You will also study about microscopes and astronomical telescopes and their magnifying powers.

### NCERT Solutions for Class 12 Physics Chapter 10 Wave Optics

In this chapter you will study about wavefront , the Huygen’s principle, reflection and refraction of plane wave  , concept of interference ,Young’s double slit experiment and expression for fringe width, coherent sources and sustained interference of light , diffraction due to a single slit, polarisation, plane polarised light and uses , Brewster’s law , the concept of resolving power.

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

In this chapter, you will learn about the dual nature of radiation, photoelectric effect, Hertz and Lenard’s observations, Einstein’s photoelectric equation, de Broglie relation. Davisson-Germer experiment.

### NCERT Solutions for Class 12 Physics Chapter 12 Atoms

This chapter explains the scattering experiment of alpha-particle, Rutherford’s model of an atom, Bohr model, energy levels, hydrogen spectrum.

### NCERT Solutions for Class 12 Physics Chapter 13 Nuclei

This chapter explains the composition and size of nucleus, atomic masses, isotopes, isobars, isotones, radioactivity, and radioactive particles and their properties and radioactive decay law, the mass-energy relation, nuclear fission, and fusion.

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

This chapter tells you about energy bands and their  I-V characteristics, diodes, and types of diodes and their characteristics and uses of diodes, junction transistor and characteristics of a transistor and application,  the concept of analog and digital signals, logic gates. Download NCERT solutions for Semiconductor electronics here.

### NCERT Solutions for Class 12 Physics Chapter 15 Communication Systems

This chapter explains you about the elements of a communication system, bandwidth of signals and transmission medium, propagation of electromagnetic waves, concept of wave propagation, satellite communication, amplitude modulation.