Physics NCERT Solutions

Physics NCERT solutions provide extensive and expert level step-by-step solutions to all questions in the NCERT Physics Books and are a valuable support to students that will help them in learning concepts while doing homework and preparing for exams.

Physics NCERT Solutions Class 6 to 12

The questions and answers given at the end of each chapter in NCERT Physics Books are not only important for examination but also essential for understanding the concepts in a better way. Hence, we strongly recommend reading Physics NCERT Solutions thoroughly and making appropriate notes and solutions in each chapter that will make revision faster.

Class 12 Physics NCERT Solutions.

• 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
• Chapter 11 Dual Nature Of Radiation And Matter
• Chapter 12 Atoms
• Chapter 13 Nuclei
• Chapter 14 Semiconductor Electronics Materials Devices And Simple Circuits
• Chapter 15 Communication Systems

Important Questions for Class 12 Physics

1. Electric Charges and Fields

• Coulombs Law, Electrostatic Field and Electric Dipole
• Gauss’s Law

2. Electrostatic Potential and Capacitance

• Electrostatic Potential
• Capactiance

3. Current Electricity

• Resistance and Ohm’s Law
• Potentiometer, Cell and their Combinations
• Kirchhoff’s Laws and Electric Devices

4. Moving Charges and Magnetism

• Magnetic Field Laws and their Applications
• Magnetic Force and Torque

5. Magnetism and Matter

• Magnetic Dipole and Magnetic Field Lines
• Earth’s Magnetic Field and Magnetic Material

6. Electromagnetic Induction

• Electromagnetic Induction Laws
• Eddy Currents and Self and Mutual Induction

7. Alternating Current

• Introduction to Alternating Current
• AC Currents
• AC Devices

8. Electromagnetic Waves

9. Ray Optics and Optical Instruments

• Reflection, Refraction and Dispersion of Light
• Optical Instrument

10. Wave Optics

• Huygens Principle
• Interference of Light

11. Dual Nature of Radiation and Matter

• Photoelectric Effect
• Matter Wave

12. Atoms

13. Nuclei

• Radioactivity and Decay Law
• Mass Defect and Binding Energy

14. Semiconductor Electronics

• Semiconductor, Diode and its Applications
• Logic Gates, Transistors and its Applications

15. Communication System

• Communication
• Modulation

CBSE Class 12 Physics Lab Manual

1. General Introduction
2. Current Electricity—Sources and Accessories
3. Measurement of Resistance
   1. To determine resistance per cm of a given wire by plotting a graph of potential difference versus current.
   2. To find resistance of a given wire using metre bridge and hence determine the resistivity (specific resistance) of its material.
   3. To verify the laws of combination (series) of resistances using a metre bridge.
   4. To verify the laws of combination (parallel) of resistances using a metre bridge.
4. Measurement of Electromotive Force and Potential Difference
   1. To compare the EMF of two given primary cells using potentiometer.
   2. To determine the internal resistance of a given primary cell using potentiometer.
5. Galvanometer, Ammeter and Voltmeter
   1. To determine resistance of a galvanometer by half-deflection method and to find its figure of merit.
   2. To convert the given galvanometer (of known resistance and figure of merit) into a voltmeter of desired range and to verify the same.
   3. To convert the given galvanometer (of known resistance and figure of merit) into an ammeter of desired range and to verify the same.
6. Frequency of A.C. (Alternating Current) Mains
   1. To find the frequency of the AC mains with a sonometer.
   2. Activities
      1. To measure the resistance and impedance of an inductor with or without iron core.
      2. To measure resistance, voltage (AC/DC), current (AC) and check continuity of a given circuit using multimeter.
      3. To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse and a power source.
      4. To assemble the components of a given electrical circuit.
      5. To study the variation in potential drop with length of a wire for a steady current.
      6. To draw the diagram of a given open circuit comprising at least a battery, resistor/rheostat, key, ammeter and voltmeter. Mark the components that are not connected in proper order and correct the circuit and also the circuit diagram.
7. Focal Length of Spherical Mirrors
   1. To find the value of v for different values of u in case of a concave mirror and to find the focal length.
   2. To find the focal length of a convex mirror, using a convex lens.
8. Focal Length of Spherical Lenses
   1. To find the focal length of a convex lens by plotting graphs between u and v or between 1/u and 1/v.
   2. To find the focal length of a concave lens using a convex lens.
9. Refractive Index of Prism Material, Glass Slab and Transparent Liquid
   1. To determine angle of minimum deviation for a given prism by plotting a graph between angle of incidence and the angle of deviation.
   2. To determine refractive index of a glass slab using a travelling microscope.
   3. To find the refractive index of a liquid by using convex lens and plane mirror.
10. Semiconductor Diodes and Transistors
    1. To draw the I-V characteristic curve of a p-n junction in forward bias and reverse bias.
    2. To draw the characteristic curve of a Zener diode and to determine its reverse breakdown voltage.
    3. To study the characteristics of a common emitter npn (or pnp) transistor and to find out the values of current and voltage gains.
11. Activities
    1. To identify a diode, an LED, a transistor, an IC, a resistor and a capacitor from a mixed collection of such items.
    2. To use a multimeter to (a) identify base of transistor, (b) distinguish between npn and pnp type transistors, (c) see the unidirectional flow of current in case of a diode and an LED, (d) check whether a given electronic component (e.g., diode, transistor or IC) is in working order.
    3. To study effect of intensity of light (by varying distance of he source) on an LDR.
    4. To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab.
    5. To observe polarisation of light using two polaroids.
    6. To observe diffraction of light due to a thin slit.
    7. (a) To study the nature and size of the image formed by a convex lens on a screen by using a candle and a screen (for different distances of the candle from the lens). (b) To study the nature and size of the image formed by a concave mirror on a screen by using a candle and a screen (for different distances of the candle from the mirror).
    8. To obtain a lens combination with the specified focal.length by using two lenses from the given set of lenses.

NCERT Exemplar Class 12 Physics Solutions

• 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
• Chapter 11 Dual Nature of Radiation and Matter
• Chapter 12 Atoms
• Chapter 13 Nuclei
• Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits
• Chapter 15 Communication Systems

NCERT Solutions for Class 11 Physics

• Chapter 1 Physical World
• Chapter 2 Units and Measurements
• Chapter 3 Motion in a Straight Line
• Chapter 4 Motion in a plane
• Chapter 5 Laws of motion
• Chapter 6 Work Energy and power
• Chapter 7 System of particles and Rotational Motion
• Chapter 8 Gravitation
• Chapter 9 Mechanical Properties Of Solids
• Chapter 10 Mechanical Properties Of Fluids
• Chapter 11 Thermal Properties of matter
• Chapter 12 Thermodynamics
• Chapter 13 Kinetic Theory
• Chapter 14 Oscillations
• Chapter 15 Waves

NCERT Exemplar Class 11 Physics Solutions

• Chapter 1 Units and Measurements
• Chapter 2 Motion in a Straight Line
• Chapter 3 Motion in a Plane
• Chapter 4 Laws of Motion
• Chapter 5 Work, Energy and Power
• Chapter 6 System of Particles and Rotational Motion
• Chapter 7 Gravitation
• Chapter 8 Mechanical Properties of Solids
• Chapter 9 Mechanical Properties of Fluids
• Chapter 10 Thermal Properties of Matter
• Chapter 11 Thermodynamics
• Chapter 12 Kinetic Theory
• Chapter 13 Oscillations
• Chapter 14 Waves

CBSE Class 11 Physics Lab Manual

1. General Introduction
2. Measurement of Length
   1. To measure diameter of a small spherical/cylindrical body using Vernier Callipers.
   2. To measure the dimensions of a given regular body of known mass using a Vernier Callipers and hence find its density.
   3. To measure internal diameter and depth of a given beaker/calorimeter using a Vernier Callipers and hence find its volume.
   4. To measure diameter of a given wire using screw gauge.
   5. To measure thickness of a given sheet using screw gauge.
   6. To determine volume of an irregular lamina using screw gauge.
   7. To determine radius of curvature of a given spherical surface by a spherometer.
3. Measurement of Mass
   1. To determine the mass of two different objects using a beam balance.
4. Measurement of Time
5. Vector Addition
   1. To find the weight of a given body using parallelogram law of vectors.
6. Motion Under Gravity and Acceleration due to Gravity
   1. Using a simple pendulum, plot its L-T² graph and use it to find the effective length of second’s pendulum.
   2. To study variation of time period of a simple pendulum r of a given length by taking bobs of same size but different masses and interpret the result.
7. Friction
   1. To study the relationship between force of limiting friction and normal reaction and to find the co-efficient of friction between a block and a horizontal surface.
8. Motion of a Body Down an Inclined Plane
   1. To find the downward force, along an inclined plane, acting on a roller due to gravitational pull of the earth and study its relationship with the angle of inclination θ by plotting graph between force and sin θ.
   2. Activities
      1. To make a paper scale of given least count, e.g., 0.2 cm, 0.5 cm.
      2. To determine mass of a given body using a metre scale by principle of moments.
      3. To plot a graph for a given set of data, with proper choice of scales and error bars.
      4. To measure the force of limiting friction for rolling of roller on a horizontal plane.
      5. To study the variation in range of a projectile with angle of projection.
      6. To study the conservation of energy of a ball rolling down on an inclined plane (using a double inclined plane).
      7. To study dissipation of energy of a simple pendulum by plotting a graph between square of amplitude and time.
9. Elasticity
   1. To determine Young’s modulus of elasticity of the material of a given wire.
   2. To find the force constant of a helical spring by plotting a graph between load and extension.
10. Atmospheric Pressure
    1. To study the variation in volume with pressure for a sample of air at constant temperature by plotting graphs between P and V, and between P and 1/V.
11. Surface Tension
    1. To determine the surface tension of water by capillary rise method.
12. Viscosity
    1. To determine the coefficient of viscosity of a given viscous liquid by measuring terminal velocity of a given spherical body.
13. Thermal Expansion of Solids
14. Thermal Expansion of Liquids
15. Thermal Radiation
    1. To study the relationship between the temperature of a hot body and time by plotting a cooling curve.
16. Heat
    1. To determine specific heat capacity of a given solid by method of mixtures.
17. Wave Motion and Velocity of Waves
18. Vibration of Strings and Air Columns
    1. To study the relation between frequency and length of a given wire under constant tension using sonometer.
    2. To study the relation between the length of a given wire and tension for constant frequency using sonometer.
    3. To find the speed of sound in air at room temperature using a resonance tube by two resonance positions.
19. Activities
    1. To observe change of state and plot a cooling curve for molten wax.
    2. To observe and explain the effect of heating on a bi-metallic strip.
    3. To note the change in level of liquid in a container on heating and interpret the observations.
    4. To study the effect of detergent on surface tension of water by observing capillary rise.
    5. To study the factors affecting the rate of loss of heat of a liquid.
    6. To study the effect of load on depression of a suitably clamped metre scale loaded at (i) its end (ii) in the middle.
    7. To observe the decrease in pressure with increase in velocity of a fluid.

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