magnetism

Question: A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is

1) $30^o$

2) $45^o$

3) $60^o$

4) $90^o$

Solution:

Explanation: No Explanation

Magnet and It's Properties

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