The Central Board of Secondary Education (CBSE) will conduct the Class 12 Physics board examination 2026 on February 20, 2026, from 10:30 AM to 1:30 PM. Students preparing for the exam are advised to prioritise key chapters and high‑weightage topics to secure better marks in the theory paper.
CBSE 12 Physics: High‑Priority Topics (Approx. 70% Theory Marks)
Examiners traditionally set questions from units that carry the bulk of marks in the Physics curriculum. Below are the last‑minute preparation topics that contribute significantly to the total theory score of 70 marks:
• Optics (18 Marks)
This is the highest weighted unit. Students should revise:
- Lens Maker’s Formula
- Young’s Double Slit Experiment (YDSE)
- Ray diagrams for microscopes and telescopes
• Magnetic Effects & Magnetism (17 Marks)
Key areas to cover include:
- Moving Coil Galvanometer (principle and conversion)
- Ampere’s Circuital Law
- Force on a moving charge in a magnetic field
• Electrostatics (16 Marks)
Important topics for revision include:
- Gauss’s Law applications
- Capacitance of a parallel plate capacitor (including dielectric)
- Electric potential and field concepts
• Modern Physics (12 Marks)
Students should focus on:
- Einstein’s Photoelectric Equation
- Bohr’s Atomic Model
- Nuclear binding energy concepts
• Semiconductors (7 Marks)
Findings in this unit
include:
- Logic gates (especially NAND/NOR as universal gates)
- Full‑wave rectifier circuit diagrams
P–N junction characteristics
CBSE 12 Physics Unit‑Wise Weightage (Theory)
Here’s an overview of the chapter‑wise weightage distribution for the board exam: )
Exam Pattern & Revision Tips
The Physics question paper will have 33 compulsory questions divided across five sections (A-E), with a mix of MCQs, short‑ and long‑answer questions. Students are advised to:
- Review NCERT textbooks thoroughly for conceptual clarity.
- Solve sample papers and last‑year papers to understand question trends.
- Practice numerical problems and key derivations.
