CBSE Class 12 · Physics

CBSE Class 12 Physics Board Exam Preparation

Strategic preparation for the most feared CBSE board subject

Complete chapter-wise preparation guide for CBSE Class 12 Physics board exam. Unit-wise marks, most important derivations, year-wise topic analysis, and a proven 6-week study plan.

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70

Theory Marks

30

Practical Marks

3 hours

Exam Duration

13

Total Chapters

Chapter-Wise Marks Breakdown

65 theory marks
ChapterMarksDifficulty
Electric Charges & Fields5Hard
Electrostatic Potential & Capacitance3Hard
Current Electricity7Medium
Magnetic Effects of Current5Medium
Magnetism & Matter3Medium
Electromagnetic Induction4Medium
Alternating Current4Hard
Electromagnetic Waves3Easy
Ray Optics8Medium
Wave Optics6Hard
Dual Nature of Radiation4Medium
Atoms & Nuclei6Medium
Semiconductor Electronics7Easy

Topics That Appear Every Year

01Derivation using Gauss's Law — Electric field due to infinite wire, plane, shell
02Kirchhoff's Laws — numerical with 2–3 loops
03Biot-Savart Law — field due to circular loop
04Faraday's Laws — all 3 forms
05Mirror formula and Lens formula — ray diagram + numerical
06Young's Double Slit — fringe width derivation
07Photoelectric effect — Einstein's equation and graph
08Truth tables — AND, OR, NOT, NAND, NOR, XOR

Study Strategy for 90+

1

Optics carries 14 marks — most in any unit. Start here. Master all ray diagrams cold

2

Learn derivations first, then numericals. Derivations are fully predictable year after year

3

For every numerical: Given → Formula → Substitution → Answer with correct SI units

4

Semiconductors (7 marks) is the easiest high-weight chapter. Master logic gates and p-n junction in 2 days

5

Week 5–6: only mock papers. Upload for AI evaluation — Physics marking scheme is very specific about steps

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ClearSteps gives you CBSE Class 12 Physics mock papers, concept videos for every chapter, and AI evaluation against the real CBSE marking scheme.

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Mathematics

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Access to all CBSE Class 10 Maths chapters
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Study by Chapter or by Section (A–E)
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Expected Paper for Improvement Exam (unlocks 3 weeks before)
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Science

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1599
Access to all CBSE Class 10 Science chapters
Know which questions are most likely to come in your exam
Study by Chapter or by Section (A–E)
Step-by-step solutions for every question
AI-revealed high probability questions
Pattern recognition across past CBSE papers
Expected Paper for Improvement Exam (unlocks 3 weeks before)
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Four Subjects

Maths · Science · English · SST

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6396
All 4 subjects — Maths, Science, English & SST
Know which questions are most likely to come in your exam
Study by Chapter or by Section (A–E)
Step-by-step solutions for every question
AI-revealed high probability questions
Pattern recognition across past CBSE papers
Expected Paper for Improvement Exam (unlocks 3 weeks before)
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Improvement Exam · May 2026

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