12th Physics - Quarterly Exam 2025-26
Most Important Questions - Last Minute Preparation
📚 Official Physics Question Bank PDF
Complete question collection prepared on 18.09.2025
Ready for download - All important topics covered
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Short Answer Questions
1. Define electric field intensity and write its unit.
2. State Gauss's law in electrostatics.
3. What is meant by equipotential surface?
4. Define capacitance of a capacitor.
5. State Ohm's law and write its limitations.
Medium Answer Questions
1. Derive expression for electric field due to point charge.
2. Explain the working principle of Van de Graaff generator.
3. Derive relation between electric field and potential.
4. Explain series and parallel combination of capacitors.
5. Derive expression for drift velocity of electrons.
Long Answer Questions
1. Derive expression for electric field due to infinite line charge using Gauss law.
2. Explain construction and working of cyclotron with neat diagram.
3. Derive expression for magnetic field on axis of circular current loop.
4. Explain electromagnetic induction and derive Faraday's laws.
5. Derive lens formula and magnification for thin lens.
🎯 Most Important Topics for Quarterly Exam
⚡ Electrostatics
- • Coulomb's Law
- • Electric Field
- • Gauss Law
- • Potential
🔋 Current Electricity
- • Ohm's Law
- • Resistance
- • Kirchhoff's Laws
- • Wheatstone Bridge
🧲 Magnetism
- • Magnetic Field
- • Biot-Savart Law
- • Ampere's Law
- • Moving Charges
🔄 EMI & Optics
- • Faraday's Law
- • Lenz's Law
- • Ray Optics
- • Lens Formula
💡 Last Minute Study Tips
📝 Formula Focus
Memorize all important formulas and their derivations. Practice numerical problems.
📊 Diagram Practice
Practice drawing neat diagrams for cyclotron, Van de Graaff generator, etc.
⏰ Time Management
Allocate time: 2M=3min, 3M=5min, 5M=8min. Leave time for revision.
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