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A bar magnet of moment of inertia 9xx10^...

A bar magnet of moment of inertia `9xx10^(-5) "kg m"^2` placed in a vibration magnetometer and oscillating in a uniform magnetic field `16pi^2 xx 10^(-5) T` make 20 oscillations is 15 s . The magnetic moment of the magnet is

A

a) `3 Am^2`

B

b) `2 Am^2`

C

c) `5 Am^2`

D

d) `4 Am^2`

Text Solution

Verified by Experts

The correct Answer is:
D
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