Physics

This is a complete, free study companion for Physics — built around what the exam actually asks. The topics examiners repeat most are Gauss's law and applications to plane sheet, wire and spherical shell, Capacitors, dielectric effect, combinations and stored energy, and Magnetic field due to current: Biot-Savart law, Ampere law, solenoid and toroid. The syllabus runs to 9 chapters. Below you'll find the full topic-frequency ranking, the exam paper pattern, every chapter, a step-by-step study plan, and the official downloads — everything in one place.

Everything here is free. We're an independent student resource, not the official CBSE body, so always confirm the current syllabus and exam dates on the official CBSE website before you rely on them.

Key information

Level: Class 12
Programme: CL12
Stream: Science
Exam: All India Senior School Certificate Examination
Conducted by: Central Board of Secondary Education (CBSE)

Most important topics (by past-paper frequency)

#	Topic	Times asked	Likelihood
1	Gauss's law and applications to plane sheet, wire and spherical shell	14	233.3%
2	Capacitors, dielectric effect, combinations and stored energy	14	233.3%
3	Magnetic field due to current: Biot-Savart law, Ampere law, solenoid and toroid	14	233.3%
4	Moving coil galvanometer, torque on current loop, ammeter and voltmeter conversion	14	233.3%
5	Faraday's law, Lenz's law, motional emf and induced current	13	216.7%
6	Series LCR circuit, impedance, resonance and phasor diagram	13	216.7%
7	Ray optics: lens formula, lens maker formula, power and optical instruments	13	216.7%
8	Wave optics: YDSE interference, fringe width, Huygens principle and diffraction	13	216.7%
9	Photoelectric effect, Einstein equation, stopping potential and graphs	12	200%
10	Bohr model, hydrogen spectrum and Rydberg formula	12	200%
11	Semiconductor diode characteristics, rectifier and Zener regulator	12	200%
12	Electric dipole field, potential, torque and potential energy	11	183.3%

Based on how often each topic appeared in official previous-year question papers.

What you will study (chapters)

Chapter 1: Electric Charges and Fields
Chapter 2: Electrostatic Potential and Capacitance
Chapter 3: Moving Charges and Magnetism
Chapter 4: Electromagnetic Induction and Alternating Current
Chapter 5: Electromagnetic Waves
Chapter 6: Optics
Chapter 7: Dual Nature of Radiation and Matter
Chapter 8: Atoms and Nuclei
Chapter 9: Electronic Devices

Official textbook

Physics — official textbook / study material — Free download from the official source.

How to study Physics and score well

Start with the highest-frequency topics — In Physics, Gauss's law and applications to plane sheet, wire and spherical shell, Capacitors, dielectric effect, combinations and stored energy, Magnetic field due to current: Biot-Savart law, Ampere law, solenoid and toroid, and Moving coil galvanometer, torque on current loop, ammeter and voltmeter conversion appear again and again in past papers. Master these first — they return the most marks for the time you put in.
Practise with previous-year papers — Solve the last 5–10 years of CBSE Physics papers under timed, exam-like conditions. Past papers show exactly which topics repeat and how questions are worded.
Revise actively, not passively — Write a one-page summary for each of the 9 chapters — key definitions, formulas and the points examiners reward — then re-test yourself instead of re-reading.
Mark your answers with the official scheme — After each practice paper, score yourself against the official marking scheme. It shows how marks are awarded step-by-step, so you learn to present answers the way examiners expect.

Exam tips: how to score higher in Physics

Where students lose marks: rushing the high-weightage questions, skipping the steps the marking scheme rewards, and saving easy sections for last. Read the whole paper first, attempt your strongest section early to bank marks, and always show your working.

Manage your time: split your time in proportion to the marks each section carries, keep a few minutes at the end to check, and never leave a question blank — a partial, structured answer still earns partial marks.

Frequently asked questions

What are the most important topics in Physics?

Based on past papers, the most frequently asked topics include Gauss's law and applications to plane sheet, wire and spherical shell, Capacitors, dielectric effect, combinations and stored energy, Magnetic field due to current: Biot-Savart law, Ampere law, solenoid and toroid. The full ranked list with how often each appears is in the "Most important topics" section above.

Where can I download Physics previous-year question papers?

Official CBSE previous-year question papers are available on the official CBSE website. Open the Question Papers section for the direct link, plus the exam pattern and the topics that repeat most.

How can I prepare for Physics faster?

Start with the highest-frequency topics, learn the exam pattern so you know how each section is marked, and practise with past papers. A subject-aware study tutor can quiz you on exactly these topics.

A Gyani AI tutor trained on the Physics syllabus and past papers can quiz you on the most-asked topics and show you exactly what to revise.