CBSE Class 12 Physics Most Important Questions 2026 – High Scoring Topics to Pass Easily

CBSE Class 12 Physics 2026 – Most Important Questions to Pass Easily

Physics is often considered difficult, but with the right important questions, you can score well even in last-minute preparation. This article covers the most expected questions for CBSE Class 12 Physics 2026, based on syllabus weightage and previous exam trends.

Focus on these questions to secure 60+ marks easily.

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CBSE Class 12 Physics Exam Pattern 2026 (Quick View)

Section	Marks
Theory Exam	70
Practical	30
Total	100

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High Scoring Chapters (Do These First)

Unit	Importance
Electrostatics	⭐⭐⭐⭐
Current Electricity	⭐⭐⭐⭐
Magnetism & EMI	⭐⭐⭐⭐
Optics	⭐⭐⭐⭐⭐
Modern Physics	⭐⭐⭐⭐⭐
Semiconductor	⭐⭐⭐

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Unit-Wise Most Important Questions for Physics 2026

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1. Electrostatics

Very Important Questions

1. State and derive Coulomb’s Law.

2. Derive expression for electric field due to infinite line charge.

3. Explain Gauss’s law with applications.

4. Derive capacitance of parallel plate capacitor.

5. What is dielectric? Effect on capacitance.

6. Numerical on energy stored in capacitor.

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2. Current Electricity

Important Topics
Ohm’s law
Kirchhoff’s laws
Wheatstone bridge
Potentiometer
Drift velocity

Expected Questions

1. Derive relation between drift velocity and current.

2. Kirchhoff’s laws with example.

3. Potentiometer principle and applications.

4. Numerical on internal resistance.

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3. Magnetic Effects of Current & Magnetism

Most Asked Questions

1. State Biot-Savart Law and derive field due to straight conductor.

2. Force on current carrying conductor.

3. Working of moving coil galvanometer.

4. Convert galvanometer into ammeter.

5. Earth’s magnetism short note.

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4. Electromagnetic Induction & AC

Must Revise
Faraday’s laws
Lenz’s law
AC circuits
Transformer

Important Questions

1. Derive EMF using Faraday’s law.

2. Explain Lenz’s law with example.

3. Phasor diagram of LCR circuit.

4. Transformer working & losses.

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5. Electromagnetic Waves

Easy 2–3 marks questions

1. What are EM waves?

2. Write uses of different parts of EM spectrum.

3. Properties of EM waves.

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6. Optics (Highest Weightage)

Ray Optics

1. Derive lens formula.

2. Magnification formula.

3. Optical instruments – microscope & telescope.

Wave Optics

1. Young’s double slit experiment.

2. Fringe width derivation.

3. Polarization short note.

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7. Dual Nature of Radiation

Important
Photoelectric effect
Einstein equation
de Broglie wavelength

Questions

1. Laws of photoelectric effect.

2. Derive Einstein’s photoelectric equation.

3. Numerical on stopping potential.

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8. Atoms & Nuclei

1. Bohr’s model derivation.

2. Energy levels of hydrogen atom.

3. Radioactive decay law.

4. Half life numericals.

5. Nuclear fission vs fusion.

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9. Semiconductor Electronics

Topic	Priority
PN junction diode	High
Zener diode	High
Transistor	Medium
Logic gates	High

Questions

1. I-V characteristics of diode.

2. Zener diode as voltage regulator.

3. Truth table of logic gates.

4. Transistor as amplifier.

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Formula Sheet – Must Revise

Chapter	Key Formula
Electrostatics	F = kq1q2/r²
Current	V = IR
Magnetism	F = qvB
EMI	E = −dΦ/dt
Optics	1/f = 1/v + 1/u
Photoelectric	E = hf − φ

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10 Numericals You Must Practice

1. Capacitor energy
2. Wheatstone bridge
3. Potentiometer
4. LCR circuit
5. Photoelectric effect
6. Half life
7. Lens formula
8. Transformer efficiency
9. Drift velocity
10. Magnetic force

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Last-Minute Physics Study Strategy

Time	Work
3 hrs	Optics
2 hrs	Electrostatics
2 hrs	Current + Magnetism
1 hr	Modern physics
1 hr	Formula revision

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Tips to Pass Physics Easily

• Write formulas clearly
• Draw neat diagrams
• Show steps in numericals
• Attempt all questions
• Revise derivations
• Use units properly

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Click Here to Know More about CBSE Class 12 Physics Last Minute Revision 2026 – Easy Overview to Pass Board Exam Details: https://dekhocampus.com/news/cbse-class-12-physics-last-minute-revision-2026