A bar magnet suspended freely in uniform...

A bar magnet suspended freely in uniform magnetic field is vibrating with a time period of `3` seconds. If the initial field strength is `2T`. Then the final field strength, for which time period becomes `4` seconds is

`1.125`Tesla`

`0.625`Tesla`

`3.55` Tesla

`0.75` Tesla

Text Solution

Verified by Experts

The correct Answer is:

`T=2pisqrt((I)/(MB))` and `T alpha (1)/(sqrtB)`

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