# NCERT Solutions for Physics Class 12

## CBSE, Karnataka Board PUC Class 12 Physics Solutions Guide

Shaalaa.com provides the CBSE, Karnataka Board PUC Class 12 Physics Solutions Digest. Shaalaa is undoubtedly a site that most of your classmates are using to perform well in exams.

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## CBSE, Karnataka Board PUC Class 12 Physics Textbook Solutions

Questions and answers for the Class 12 Physics Textbook are on this page. NCERT Solutions for Class 12 Physics Digest CBSE, Karnataka Board PUC will help students understand the concepts better.

## NCERT Solutions for Class 12 Physics Chapterwise List | Class 12 Physics Digest

The answers to the NCERT books are the best study material for students. Listed below are the chapter-wise NCERT Physics Class 12 Solutions CBSE, Karnataka Board PUC.

## Chapters covered in NCERT Solutions for Physics Class 12

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

Concepts covered in Electric Charge and Fields are Applications of Gauss’s Law, Basic Properties of Electric Charge, Charging by Induction, Continuous Distribution of Charges, Coulomb’s Law - Force Between Two Point Charges, Dipole in a Uniform External Field, Electric Charges, Electric Dipole, Electric Field Due to a Point Charge, Electric Field Due to a System of Charges, Electric Field Lines, Electric Flux, Force Between Two Point Charges, Gauss’s Law, Introduction of Electric Field, Physical Significance of Electric Field, Superposition Principle - Forces Between Multiple Charges, Superposition Principle of Forces, Uniformly Charged Infinite Plane Sheet and Uniformly Charged Thin Spherical Shell (Field Inside and Outside).

#### NCERT Class 12 Physics Chapter 1: Electric Charge and Fields exercises

ExerciseNo. of questionsPages
Exercise3746 to 50

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

Concepts covered in Electrostatic Potential and Capacitance are Capacitance of a Parallel Plate Capacitor with and Without Dielectric Medium Between the Plates, Capacitors and Capacitance, Combination of Capacitors, Conductors and Insulators Related to Electric Field, Dielectrics and Polarisation, Effect of Dielectric on Capacity, Electrical Potential Energy of a System of Two Point Charges and of Electric Dipole in an Electrostatic Field, Electric Potential, Electric Potential Difference, Electrostatics of Conductors, Energy Stored in a Capacitor, Equipotential Surfaces, Free Charges and Bound Charges Inside a Conductor, Potential Due to an Electric Dipole, Potential Due to a Point Charge, Potential Due to a System of Charges, Potential Energy of a Dipole in an External Field, Potential Energy of a Single Charge, Potential Energy of a System of Charges, Potential Energy of a System of Two Charges in an External Field, Relation Between Electric Field and Electrostatic Potential, The Parallel Plate Capacitor, Van De Graaff Generator.

#### NCERT Class 12 Physics Chapter 2: Electrostatic Potential and Capacitance exercises

ExerciseNo. of questionsPages
Exercise4487 to 92

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

Concepts covered in Current Electricity are Cells, Emf, Internal Resistance, Combination of Cells in Series and in Parallel, Combination of Resistors - Series and Parallel, Conductivity and Conductance;, Current Density, Delta Star Transformation, Drift of Electrons and the Origin of Resistivity, Electrical Power, Electrical Resistivity and Conductivity, Electric Current, Electric Currents in Conductors, Flow of Electric Charges in a Metallic Conductor, Kirchhoff’s Rules, Limitations of Ohm’s Law, Measurement of Internal Resistance of a Cell, Metre Bridge, Ohm's Law (V = IR), Potential Difference and Emf of a Cell, Potentiometer, Resistivity of Various Materials, Temperature Dependence of Resistance, V-I Characteristics (Linear and Non-linear), Wheatstone Bridge.

#### NCERT Class 12 Physics Chapter 3: Current Electricity exercises

ExerciseNo. of questionsPages
Exercise32127 to 130

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

Concepts covered in Moving Charges and Magnetism are Ampere’s Circuital Law, Circular Current Loop as a Magnetic Dipole, Cyclotron, Force Between Two Parallel Currents, the Ampere, Force on a Current - Carrying Conductor in a Uniform Magnetic Field, Force on a Moving Charge in Uniform Magnetic and Electric Fields, Magnetic Diapole, Magnetic Field Due to a Current Element, Biot-Savart Law, Magnetic Field on the Axis of a Circular Current Loop, Magnetic Force, Motion in a Magnetic Field, Moving Coil Galvanometer, Oersted’s Experiment, Solenoid and the Toroid - the Solenoid, Solenoid and the Toroid - the Toroid, Straight and Toroidal Solenoids (Only Qualitative Treatment), The Magnetic Dipole Moment of a Revolving Electron, Torque on a Current Loop in Magnetic Field, Torque on a Rectangular Current Loop in a Uniform Magnetic Field, Velocity Selector.

#### NCERT Class 12 Physics Chapter 4: Moving Charges and Magnetism exercises

ExerciseNo. of questionsPages
Exercise 11 -
Exercise 215169 to 170

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

Concepts covered in Magnetism and Matter are Curie Law of Magnetism, Current Loop as a Magnetic Dipole and Its Magnetic Dipole Moment, Dipole in a Uniform External Field, Hysteresis Loop, Introduction of Magnetism, Magnetic Dipole Moment of a Revolving Electron, Magnetic Field Intensity Due to a Magnetic Dipole (Bar Magnet) Along Its Axis, Magnetic Field Intensity Due to a Magnetic Dipole (Bar Magnet) Perpendicular to Its Axis, Magnetic Properties of Materials, Magnetic Substances, Magnetisation and Magnetic Intensity, Magnetism and Gauss’s Law, Permanent Magnet and Electromagnet, The Bar Magnet, The Earth’s Magnetism, Torque on a Magnetic Dipole (Bar Magnet) in a Uniform Magnetic Field.

#### NCERT Class 12 Physics Chapter 5: Magnetism and Matter exercises

ExerciseNo. of questionsPages
Exercise25200 to 202

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

Concepts covered in Electromagnetic Induction are A.C. Generator, Eddy Currents, Electromagnetic Induction, Energy Consideration: a Quantitative Study, Faraday’s Law of Induction, Induced e.m.f. and Induced Current, Lenz’s Law and Conservation of Energy, Magnetic Flux, Motional Electromotive Force (e.m.f.), Mutual Inductance, Self Inductance, The Experiments of Faraday and Henry.

#### NCERT Class 12 Physics Chapter 6: Electromagnetic Induction exercises

ExerciseNo. of questionsPages
Exercise17229 to 232

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

Concepts covered in Alternating Current are Alternating Currents, Alternating Currents and Direct Currents, Different Types of AC Circuits: AC Voltage Applied to a Capacitor, Different Types of AC Circuits: AC Voltage Applied to an Inductor, Different Types of AC Circuits: AC Voltage Applied to a Resistor, Different Types of AC Circuits: AC Voltage Applied to a Series LCR Circuit, Forced Oscillations and Resonance, LC Oscillations, Peak and Rms Value of Alternating Current Or Voltage, Power in AC Circuit: the Power Factor, Reactance and Impedance, Representation of AC Current and Voltage by Rotating Vectors - Phasors, Transformers.

#### NCERT Class 12 Physics Chapter 7: Alternating Current exercises

ExerciseNo. of questionsPages
Exercise12266

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

Concepts covered in Electromagnetic Waves are Displacement Current, Electromagnetic Spectrum, Electromagnetic Waves, Elementary Facts About Electromagnetic Wave Uses, Transverse Nature of Electromagnetic Waves.

#### NCERT Class 12 Physics Chapter 8: Electromagnetic Waves exercises

ExerciseNo. of questionsPages
Exercise20286 to 287

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

Concepts covered in Ray Optics and Optical Instruments are Combination of Thin Lenses in Contact, Concave Mirror, Dispersion by a Prism, Lenses, Lensmaker's Formula, Light Process and Photometry, Magnification, Optical Instruments, Optical Instruments: Compound Microscope, Optical Instruments: Simple Microscope, Optical Instruments: Telescope, Optical Instruments: the Eye, Power of a Lens, Rarer and Denser Medium, Ray Optics - Mirror Formula, Reflection of Light by Spherical Mirrors, Refraction, Refraction at Spherical Surfaces, Refraction at Spherical Surfaces and Lenses, Refraction by a Lens, Refraction Through a Prism, Snell’s Law, Some Natural Phenomena Due to Sunlight, Thin Lens Formula, Total Internal Reflection.

#### NCERT Class 12 Physics Chapter 9: Ray Optics and Optical Instruments exercises

ExerciseNo. of questionsPages
Exercise49345 to 350

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

Concepts covered in Wave Optics are Brewster's Law, Coherent and Incoherent Addition of Waves, Coherent and Incoherent Sources and Sustained Interference of Light, Corpuscular Theory, Diffraction of Light, Fraunhofer Diffraction Due to a Single Slit, Huygens' Principle, Interference, Interference of Light Waves and Young’s Experiment, Introduction of Wave Optics, Law of Malus, Plane Polarised Light, Polarisation, Principle of Superposition of Waves, Proof of Laws of Reflection and Refraction Using Huygens' Principle, Reflection and Refraction of Plane Wave at a Plane Surface Using Wave Fronts, Reflection of a Plane Wave by a Plane Surface, Refraction at a Rarer Medium, Refraction of a Plane Wave, Refraction of Monochromatic Light, Resolving Power of Microscope and Astronomical Telescope, Seeing the Single Slit Diffraction Pattern, Speed of Light, The Doppler Effect, The Single Slit, The Validity of Ray Optics, Width of Central Maximum.

#### NCERT Class 12 Physics Chapter 10: Wave Optics exercises

ExerciseNo. of questionsPages
Exercise31383 to 385

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

Concepts covered in Dual Nature of Radiation and Matter are Davisson and Germer Experiment, de-Broglie Relation, Dual Nature of Radiation, Einstein’s Equation - Particle Nature of Light, Einstein’s Photoelectric Equation: Energy Quantum of Radiation, Electron Emission, Experimental Study of Photoelectric Effect, Particle Nature of Light: The Photon, Photoelectric Effect and Wave Theory of Light, Photoelectric Effect - Hallwachs’ and Lenard’s Observations, Photoelectric Effect - Hertz’s Observations, Wave Nature of Matter.

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

ExerciseNo. of questionsPages
Exercise47407 to 411

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

Concepts covered in Atoms are Alpha-particle Scattering and Rutherford’s Nuclear Model of Atom, Atomic Spectra, Bohr’s Model for Hydrogen Atom, Dalton's Atomic Theory, De Broglie’s Explanation of Bohr’s Second Postulate of Quantisation, Energy Levels, Heisenberg and De Broglie Hypothesis, Hydrogen Spectrum, Introduction of Atoms, The Line Spectra of the Hydrogen Atom, Thompson Model.

#### NCERT Class 12 Physics Chapter 12: Atoms exercises

ExerciseNo. of questionsPages
Exercise26435 to 437

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

Concepts covered in Nuclei are Alpha Decay, Atomic Masses and Composition of Nucleus, Atomic Mass, Mass - Energy Relation and Mass Defect, Beta Decay, Controlled Thermonuclear Fusion, Gamma Decay, Introduction of Nuclear Energy, Introduction of Radioactivity, Law of Radioactive Decay, Mass Defect and Binding Energy, Mass - Energy, Nuclear Binding Energy, Nuclear Fission, Nuclear Force, Nuclear Fusion – Energy Generation in Stars, Nuclear Reactor, Size of the Nucleus.

#### NCERT Class 12 Physics Chapter 13: Nuclei exercises

ExerciseNo. of questionsPages
Exercise41462 to 466

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

Concepts covered in Semiconductor Electronics: Materials, Devices and Simple Circuits are Application of Junction Diode as a Rectifier, Basic Transistor Circuit Configurations and Transistor Characteristics, Classification of Metals, Conductors and Semiconductors, Concept of Semiconductor Electronics: Materials, Devices and Simple Circuits, Digital Electronics and Logic Gates, Diode as a Rectifier, Energy Bands in Conductors, Semiconductors and Insulators, Extrinsic Semiconductor, Feedback Amplifier and Transistor Oscillator, Integrated Circuits, Intrinsic Semiconductor, p-n Junction, Semiconductor Diode, Special Purpose P-n Junction Diodes, Transistor Action, Transistor and Characteristics of a Transistor, Transistor as a Device, Transistor as an Amplifier (Ce-configuration), Transistor: Structure and Action, Triode, Zener Diode as a Voltage Regulator.

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

ExerciseNo. of questionsPages
Exercise19509 to 512

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

Concepts covered in Communication Systems are Amplitude Modulation (AM), Bandwidth of Signals, Bandwidth of Transmission Medium, Basic Terminology Used in Electronic Communication Systems, Detection of Amplitude Modulated Wave, Elements of a Communication System, Modulation and Its Necessity, Need for Modulation and Demodulation, Production of Amplitude Modulated Wave, Propagation of Electromagnetic Waves, Satellite Communication, Sinusoidal Waves.

#### NCERT Class 12 Physics Chapter 15: Communication Systems exercises

ExerciseNo. of questionsPages
Exercise8530 to 531

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## NCERT Solutions for Physics Class 12

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## NCERT Solutions for Class 12 Physics CBSE, Karnataka Board PUC

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