Physics Questions and Answers – Class 12

Physics Class 12 Questions and Answers

Our 1000+ “Physics – Class 12” (along with 1000+ “Physics – Class 11”) questions and answers focuses on all areas of Physics subject covering 200+ topics in Physics. One can read Class 11 Here. These topics are chosen from a collection of most authoritative and best reference books on Physics. One should spend 1 hour daily for 2-3 months to learn and assimilate Physics comprehensively. This way of systematic learning will prepare anyone easily towards Physics interviews, online tests, examinations and certifications.


– 1000+ Multiple Choice Questions & Answers in Physics with explanations
– Every MCQ set focuses on a specific topic in Physics Subject


Who should Practice these Physics Questions?
– Anyone wishing to sharpen their knowledge of Class 12 – Physics Subject
– Anyone preparing for school test and many other online/Offline Tests/Contests in Physics
– Anyone preparing for NEET, IIT JEE, AIIMS & SAT Exams in Physics
– Anyone preparing for various Central board examinations in Physics namely CBSE, ICSE, IGCSE, and NIOS Board
– Anyone preparing for various State board examinations in Physics such as PUC, Intermediate exams, etc
– Anyone preparing for entrance examinations and other competitive examinations such as NTSE, Olympiad, etc
– All – High School Students and Freshers

Here’s list of Questions & Answers on Physics – Class 12 Subject covering 100+ topics:

1. Questions & Answers on Charges and Fields

The section contains questions and answers on electric charges and its basic properties, conductors, insulators, induction charging, coulombs law, electric field, electric flux, electric field lines, electric dipole, continuous charge distribution, gauss law and its applications.

Electric Charges
Conductors and Insulators
Charging by Induction
Basic Properties of Electric Charge
Coulomb’s Law
Forces Between Multiple Charges
Electric Field
Electric Field Lines
Electric Flux
Electric Dipole
Dipole in a Uniform External Field
Continuous Charge Distribution
Gauss’s Law
Application of Gauss’s Law

2. Questions on Electrostatic Potential and Capacitance

The section contains questions on electrostatic potential, potential due to point charge and electric dipole, equipotential surfaces, potential energy in external field, conductors electrostatics, dielectrics, polarisation, capacitors, capacitance, parallel plate capacitor, dielectric capacitance effects, capacitors combination and van de graff generator.

Electrostatic Potential
Potential due to a Point Charge
Potential due to an Electric Dipole
Potential due to a System of Charges
Equipotential Surfaces
Potential Energy of a System of Charges
Potential Energy in an External Field
Electrostatics of Conductors
Dielectrics and Polarisation
Capacitors and Capacitance
Parallel Plate Capacitor
Effect of Dielectric on Capacitance
Combination of Capacitors
Energy Stored in a Capacitor
Van de Graff Generator

3. Questions & Answers on Current Electricity


The section contains questions and answers on electric current, ohms law and its limitations, electrons drift and resistivity origin, various materials resistivity, electrical energy and power, resistivity temperature dependence, resistors combination, cells, emf and internal resistance, kirchoffs law, potentiometer, wheatstone and meter bridges.

Electric Current
Electric Currents in Conductors
Ohm’s Law
Drift of Electrons and the Origin of Resistivity
Limitations of Ohm’s Law
Resistivity of Various Materials
Temperature Dependence of Resistivity
Electrical Energy & Power
Combination of Resistors – Series and Parallel
Cells, Emf and Internal Resistance
Cells in Series and in Parallel
Kirchoff’s Law
Wheatstone Bridge
Meter Bridge

4. Questions on Moving Charges and Magnetism

The section contains questions on magnetic force, magnetic field motion, electric and magnetic field motion, biot savart law, amperes circuital law, solenoid and toroid, two parallel currents forces, moving coil galvanometer, current loop and magnetic dipole torque.

Magnetic Force
Motion in a Magnetic Field
Motion in Combined Electric and Magnetic Field
Magnetic Field due to a Current Element & Biot-Savart Law
Magnetic Field on the Axis of a Circular Current Loop
Ampere’s Circuital Law
Solenoid and Toroid
Ampere and Forces between Two Parallel Currents
Torque on Current Loop & Magnetic Dipole
Moving Coil Galvanometer

5. Questions & Answers on Magnetism and Matter

The section contains questions and answers on bar magnet, magnetism and gauss law, earth magnetism, magnetisation, magnetic intensity, materials magnetic properties, permanent magnets and electromagnets.

Bar Magnet
Magnetism and Gauss’s Law
Earth’s Magnetism
Magnetisation and Magnetic Intensity
Magnetic Properties of Materials
Permanent Magnets and Electromagnets

6. Questions on Electromagnetic Induction

The section contains questions on faraday and henry experiments, magnetic flux, induction faradays law, lenz law, energy conservation, motional electromotive force, energy consideration quantitative study, eddy currents and inductance.

Faraday and Henry Experiments
Magnetic Flux
Faraday’s Law of Induction
Lenz’s Law and Conservation of Energy
Motional Electromotive Force
Energy Consideration : A Quantitative Study
Eddy Currents

7. Questions & Answers on Alternating Current

The section contains questions and answers on ac generator, ac voltage applied to resistor, inductor and capacitor, phasors, ac circuit power, lc oscillations, transformers and displacement current.

AC Generator
AC Voltage Applied to a Resistor
Representation of AC Current and Voltage by Rotating Vectors – Phasors
AC Voltage Applied to an Inductor
AC Voltage Applied to a Capacitor
AC Voltage Applied to a Series LCR Circuit
Power in AC Circuit : The Power Factor
LC Oscillations
Displacement Current

8. Questions on Electromagnetic Waves


The section contains questions on electromagnetic waves and spectrum.

Electromagnetic Waves Electromagnetic Spectrum

9. Questions & Answers on Ray Optics and Optical Instruments

The section contains questions and answers on light reflection using spherical mirrors, refraction, total internal reflection, refraction through prism and lenses, natural phenomena due to sunlight and optical instruments.

Reflection of Light by Spherical Mirrors
Total Internal Reflection
Refraction at Spherical Surfaces and by Lenses
Refraction through a Prism
Some Natural Phenomena due to Sunlight
Optical Instruments

10. Questions on Wave Optics

The section contains questions on huygens principle, plane refraction and reflection using huygens principle, coherent and incoherent addition of waves, light waves interference and youngs experiment, diffraction and polarisation.

Huygen’s Principle
Refraction and Reflection of Plane Waves Using Huygen’s Principle
Coherent and Incoherent Addition of Waves
Interference of Light Waves and Young’s Experiment

11. Questions & Answers on Dual Nature of Radiation and Matter

The section contains questions and answers on electron emission, photoelectric effect and its experimental studies, light photoelectric and wave theories, einstein photoelectric equations, photon, matter wave nature, davisson and germer experiments.

Electron Emission
Photoelectric Effect
Experimental Study of Photoelectric Effect
Photoelectric Theory and Wave Theory of Light
Einstein’s Photoelectric Equation : Energy Quantum of Radiation
Particle Nature of Light : The Photon
Wave Nature of Matter
Davisson and Germer Experiment

12. Questions on Atoms

The section contains questions on alpha particle scattering and rutherford nuclear model of atom, atomic spectra, bohr model, hydrogen atom line spectra and de broglie explanation of quantisation.

Alpha-Particle Scattering and Rutherford’s Nuclear Model of Atom
Atomic Spectra
Bohr Model of the Hydrogen Atom
The Line Spectra of the Hydrogen Atom
DE Broglie’s Explanation of Bohr’s Second Postulate of Quantisation

13. Questions & Answers on Nucleus


The section contains questions and answers on atomic masses, nucleus composition and size, nuclear force, radioactivity and nuclear energy.

Atomic Masses and Composition of Nucleus
Size of the Nucleus
Nuclear Force
Nuclear Energy

14. Questions on Semiconductor Electronics : Materials, Devices and Simple Circuits

The sections covers questions on metals, conductors and semiconductors classification, intrinsic and extrinsic semiconductor, p-n junction, semiconductor diode, junction diode application, junction transistor, integrated circuits, digital electronics and logic gates.

Classification of Metals, Conductors and Semiconductors
Intrinsic Semiconductor
Extrinsic Semiconductor
p-n Junction
Semiconductor Diode
Application of Junction Diode as a Rectifier
Special Purpose p-n Junction Diodes
Junction Transistor
Digital Electronics and Logic Gates
Integrated Circuits

15. Questions & Answers on Communication Systems

The section contains questions and answers on communication system elements, electronic communication system basic terminology, signals and transmission medium bandwidth, electromagnetic waves propagation, modulation and its necessity, amplitude modulation, amplitude modulated wave production and detection.

Elements of a Communication System
Basic Terminology used in Electronic Communication Systems
Bandwidth of Signals
Bandwidth of Transmission Medium
Propagation of Electromagnetic Waves
Modulation and its Necessity
Amplitude Modulation
Production of Amplitude Modulated Wave
Detection of Amplitude Modulated Waves
If you would like to learn Physics thoroughly, you should attempt to work on the complete set of questions and answers mentioned above. It will immensely help anyone trying to crack an exam or an interview.

Wish you the best in your endeavor to learn and master Physics!

Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn