CBSE 12 Physics Board Exam 2025 : Most Important Topics for Last-Minute Revision

CBSE 12th exams are underway and your CBSE 12th Physics exam is scheduled on 21th Feb, 2025. You have just a few hours left for CBSE 12th Physics exam.

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We know how important it is to focus on the right topics and questions during revision, so this article provides important CBSE 12th Physics Most Expected Topics for last minute revision.

👉 Read Also - CBSE 12 Physics Board Exam 2025 : Important Derivations for Revision (All Chapters)

The questions given above are taken from the topics asked in previous year question papers. Check their recurring pattern which supports their importance for CBSE Board Exam 2025.

CBSE 12 Physics Important Topics For 2025 Board Exam

Electrostatics

1. Gauss’s theorem and its application (2020, 2021, 2023)
2. Capacitance of a parallel plate capacitor with/without dielectric (2020, 2022, 2024)
3. Electric flux and SI unit (2020, 2022, 2024)
4. Electric field at the equatorial point of an electric dipole (2021, 2023)

Current Electricity

1. Ohm’s Law & derivation using drift velocity (2020, 2022, 2024)
2. Colour coding of resistors (2021, 2023)
3. Series and parallel combination of resistors – derivation (2020, 2022)
4. Wheatstone’s bridge – condition for balance (2021, 2023, 2024)
5. EMF vs terminal voltage (2020, 2022, 2024)

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Magnetism & Moving Charges

1. Biot-Savart’s law & application to circular loop (2020, 2021, 2023)
2. Force on a charged particle in a uniform magnetic field (2021, 2023, 2024)
3. Magnetic field along the axis of a solenoid (2021, 2023)
4. Ampere’s Circuital Law (2020, 2022, 2024)

Electromagnetic Induction & Alternating Current

1. Faraday’s laws of electromagnetic induction (2020, 2022, 2024)
2. Self-inductance of a solenoid – derivation (2021, 2023)
3. Eddy currents & applications (2020, 2021, 2023)
4. Impedance in an LCR circuit – derivation (2020, 2022)
5. Power factor & its significance (2021, 2023, 2024)

👉 Read Also - CBSE Class 12 Physics Board Exam 2025 : Most Repeated Questions from Last 12 Years; Download PDF

Electromagnetic Waves & Optics

1. Maxwell’s equations & significance (2021, 2023)
2. Fringe width derivation in Young’s double-slit experiment (2020, 2022, 2024)
3. Total internal reflection & optical fibres (2021, 2023)
4. Resolving power of a telescope – derivation (2020, 2022)
5. Polarisation – principle & applications (2021, 2023, 2024)

👉 Read Also - CBSE Class 12 Physics Board Exam 2025: Repeated Questions in Previous Board Exams

Modern Physics

1. de Broglie wavelength derivation (2020, 2022, 2024)
2. I-V characteristics of a PN junction diode (2020, 2022, 2024)
3. Zener diode as a voltage regulator (2021, 2023)
4. Transistor as an amplifier (2020, 2022, 2024)

Nuclei & Semiconductor Devices

1. Nuclear fission vs nuclear fusion (2020, 2022, 2024)
2. Logic gates & truth tables (AND, OR, NOT, NAND, NOR) (2021, 2023)
3. Full-wave rectifier – working & diagram (2020, 2022, 2024)

👉 CBSE Class 12 Study Materials

CBSE Class 12 Syllabus 2024-25	CBSE Class 12 Previous Year Papers
NCERT Books For Class 12 Books	NCERT Class 12 Solutions
CBSE Class 12 Full Study Material	CBSE Class 12 Sample Paper 2024-25