CBSE Class 12 Physics Board Exam 2025: Expected Questions and Preparation Tips

CBSE Class 12 Physics Board Exam 2025: Expected Questions and Preparation Tips

The Central Board of Secondary Education (CBSE) has announced the date sheet for the Class 10 and 12 Board Exams 2025. Class 12 exams begin February 15th and conclude April 4th, 2025, with the Physics exam scheduled for February 21st. Students are diligently preparing, and resources like Physics Wallah are offering valuable support.

Expected Questions for Class 12 Physics Board Exam 2025

Shailendra Pandey from Physics Wallah has shared anticipated questions to aid student preparation. While these suggestions are helpful, students should prioritize the official CBSE textbooks, sample papers, model papers, and previous years’ question papers available on the CBSE website. Here are some expected questions from key chapters:

Chapter 12: Atoms

* Explain Rutherford’s model and its limitations.
* Derive the expression for the radius of the nth orbit of a hydrogen atom (Bohr’s model).
* State and derive the energy expression for an electron in the nth orbit of a hydrogen atom.
* Explain the hydrogen atom’s spectral series (Lyman, Balmer, etc.).
* Numerical problem: Calculate the wavelength of a photon emitted during electron transition between two energy levels in a hydrogen atom.

Chapter 13: Nuclei

* Define mass defect and binding energy; derive their relationship.
* Explain nuclear force and its characteristics.
* Explain nuclear fission and fusion and their applications in energy production.

Chapter 14: Semiconductor Electronics

* Differentiate between intrinsic and extrinsic semiconductors.
* Discuss the working of a p-n junction diode under forward and reverse bias.
* Draw and explain a half-wave rectifier circuit diagram.
* Derive the efficiency expression for a full-wave rectifier.

CBSE Board Exam 2025: Preparation Tips

Effective preparation is key to success. Here’s a strategic approach:

Understand the Syllabus:

Thoroughly review the latest CBSE syllabus, paying close attention to high-weightage chapters such as Optics, Electrostatics, and Current Electricity. Note any removed or modified topics.

Organize Study Materials:

Utilize NCERT textbooks and the NCERT Wallah YouTube Channel (Vijeta Series) as primary resources. Supplement with guides like SL Arora for additional numerical problems. Keep CBSE sample papers and past papers readily accessible for practice.

Create a Study Plan:

Balance theory and numerical problem-solving (e.g., 40% theory, 60% numerical). Schedule daily revisions and mock tests to track progress and pinpoint weaknesses.

Master the Basics:

Ensure a firm grasp of fundamental concepts, formulas, and definitions. Regularly review key formulas and derivations, maintaining a formula sheet for quick reference.

Practice Numerical Problems:

Solve all numerical problems from NCERT, focusing on high-weightage topics like Current Electricity, Electrostatics, Ray and Wave Optics, Magnetic Effects of Current, and Alternating Current. Gradually increase difficulty using reference books.

Focus on Important Derivations:

Memorize and practice derivations step-by-step, as they are frequently tested. Focus on derivations such as the lens maker’s formula, electric field due to a dipole, Biot-Savart law, and EMF in a rotating coil (AC generator).

Solve Sample Papers:

Solve at least three sample papers under exam conditions in the final month. Analyze your performance to identify areas needing improvement and refine time management.

Revise Regularly:

Consistent revision of theoretical concepts, formulas, and key questions is crucial for knowledge retention. Practice numerical problems and derivations until you are confident.