Introduction

Preparing for CBSE Class 12 Physics 2026 can feel overwhelming because of vast syllabus, derivations, formulas, and numerical problems.

The smartest way to score 95%+ marks is by using chapter-wise short notes for quick revision.

At Exam Notes Store, we provide structured, formula-focused, exam-oriented notes covering all 14 chapters of the CBSE 2026 syllabus.

📚 CBSE Class 12 Physics 2026 – Chapter Wise Short Notes

Below is a quick revision summary of all chapters:

🔹 Chapter 1: Electric Charges and Fields

Important Concepts:

• Coulomb’s Law
• Electric Field
• Electric Field Lines
• Electric Dipole
• Gauss’s Theorem

Important Formula:

$$F = k \frac{q_1 q_2}{r^2}$$

Exam Tips:

✔ Diagrams are frequently asked
✔ Derivation of Electric field due to dipole is important

🔹 Chapter 2: Electrostatic Potential and Capacitance

Key Points:

• Electric Potential
• Equipotential Surface
• Capacitance of Parallel Plate Capacitor
• Combination of Capacitors

Important Formula:

$$C = \frac{\varepsilon_0 A}{d}$$

✔ Numericals carry high weightage

🔹 Chapter 3: Current Electricity

Important Topics:

• Ohm’s Law
• Drift Velocity
• Kirchhoff’s Laws
• Wheatstone Bridge

Key Formula:

$$V = IR$$

✔ Derivation of drift velocity is very important

🔹 Chapter 4: Moving Charges and Magnetism

• Biot–Savart Law
• Ampere’s Circuital Law
• Force on moving charge
• Cyclotron

✔ Numerical problems are common

🔹 Chapter 5: Magnetism and Matter

• Bar Magnet
• Earth’s Magnetism
• Magnetic Susceptibility

✔ Short answer questions mostly

🔹 Chapter 6: Electromagnetic Induction

• Faraday’s Laws
• Lenz’s Law
• Self Inductance
• AC Generator

✔ Very important 5-mark derivations

🔹 Chapter 7: Alternating Current

• AC Voltage
• RMS Value
• LC Oscillations
• Transformer

$$V_{rms} = \frac{V_0}{\sqrt{2}}$$

✔ Numerical-based chapter

🔹 Chapter 8: Electromagnetic Waves

• Types of EM Waves
• Properties
• Applications

✔ Theory-based & easy scoring

🔹 Chapter 9: Ray Optics and Optical Instruments

• Reflection & Refraction
• Lens Maker Formula
• Optical Instruments

✔ Ray diagrams must be practiced

🔹 Chapter 10: Wave Optics

• Interference
• Diffraction
• Young’s Double Slit Experiment

✔ Derivations are important

🔹 Chapter 11: Dual Nature of Radiation and Matter

• Photoelectric Effect
• Einstein’s Equation

✔ Frequently asked numericals

🔹 Chapter 12: Atoms

• Bohr’s Model
• Energy Levels

✔ Simple theory + small numericals

🔹 Chapter 13: Nuclei

• Radioactivity
• Half Life
• Nuclear Fission & Fusion

$$N = N_0 e^{-\lambda t}$$

✔ Important for 3–5 marks

🔹 Chapter 14: Semiconductor Electronics

• PN Junction
• Diode
• Logic Gates

✔ Very scoring chapter

📈 Why Short Notes Are Important?

• Saves 60% revision time
• Quick formula recap
• Boosts exam confidence
• Perfect for last-minute revision