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A bar magnet has a magnetic moment equal...

A bar magnet has a magnetic moment equal to `5 xx 10^(-5) Wb m`. It is suspended in a magnetic field which has a magnetic induction `B = 8pi x 10^(-4) T`. The magnet vibrates with a period of vibration equal to 15 s. The moment of inertia of magnet is

A

`22.5 kg -m^(2) `

B

`11.25 kg - m^(2) `

C

`5.62 kg m ^(2) `

D

`0.57 kg-m^(2) `

Text Solution

Verified by Experts

The correct Answer is:
D
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