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A magnet is suspended horizontally in th...

A magnet is suspended horizontally in the earth's field. The period of oscillation in the place is `T`. If a piece of wood of the same moment of inertia as the magnet is attached to it, new period of oscillation would be

A

`(T)/(3)`

B

`(T)/(2)`

C

`(T)/(sqrt2)`

D

`T sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
D
`T= 2pi sqrt((I)/(MB_(H))) rArr T prop sqrtI`
`T= sqrt2T [" as " I. = 2I]`
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