CBSE Physics Class 12 carries 70 marks theory and 30 marks practical. Theory paper has Section A (20 MCQ and assertion-reason), Section B (short answers), Section C (long answers) and Section D (case study). The practical exam is conducted by the school and includes experiments, activities and viva voce. Both sections must be passed separately.
Electrostatics and Current Electricity together carry 16 marks — highest weightage. Optics carries 14 marks. Magnetic Effects and EMI carry 13 marks. Dual Nature and Atoms/Nuclei carry 12 marks. Wave Optics carries 10 marks. Semiconductors carry 7 marks. Focus maximum time on Electrostatics, Optics and Magnetic Effects.
Electric field along axial and equatorial line of a dipole. Biot-Savart Law and its application to circular loop. Faraday's Law and Lenz's Law derivation. Derivation of lens maker's formula. Bohr's model of hydrogen atom. These 5 derivations appear in almost every CBSE board paper.
CBSE Physics numericals follow predictable patterns. For Electrostatics — Coulomb's law, electric field, potential numericals. For Current Electricity — Kirchhoff's law circuit problems. For Optics — lens and mirror formula, refraction through prism. Practice last 10 years CBSE papers and you will find 70% of numericals follow the same patterns.
CBSE introduced Assertion-Reason questions from 2021 onwards. These carry 1 mark each and test conceptual clarity. Both statement A and R can be correct or incorrect, and if both are correct, R may or may not explain A. Practice at least 50 assertion-reason questions from each chapter before the exam.
Day 1-10: Chapter-wise formula revision and important derivations. Day 11-20: Solve 3 previous year papers per day under timed conditions. Day 21-28: Focus on weak chapters identified from practice papers. Day 29-30: Light revision of all formulas and common mistakes. Never start new topics in the last 30 days.
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