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Class 12 Physics (Part I) Chapter 5 Magnetism And Matter Quiz 10 (9 MCQs)

Quiz Instructions

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1. The value of dip angle at a place where the horizontal component of earth's magnetic field is $\sqrt{3}$

Correct Answer: C) 30 degree.

2. The primary origin of magnetism lies in

Correct Answer: A) Atomic current and intrinsic spin of electrons.

3. Why does the compass needle move when a magnet is brought near?

Correct Answer: A) The magnet creates a magnetic field that interacts with the needle.

4. Which of the following is an example of diamagnetic substance?

Correct Answer: C) Aluminum.

5. A bar magnet AB with magnetic moment M is cut into two equal parts perpendicular to its axis. One part is kept over the other so that end B is exactly over A. What will be the magnetic moment of the combination so formed?

Correct Answer: A) Zero.

6. If a transformer increases voltage, it is called a ..... transformer.

Correct Answer: C) Step up.

7. What is the principle behind magnetic levitation?

Correct Answer: B) Magnetic levitation is based on the principle of magnetic forces counteracting gravity.

8. Magnetism is generated by moving

Correct Answer: B) Electrons.

9. For a magnet, the strength of the magnetic field:

Correct Answer: A) Maximum at the poles.

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