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A short magnetic needle is pivoted in a ...

A short magnetic needle is pivoted in a uniform magnetic field of strength `sqrt(3)T` is applied to the needle in a perpendicular direction, the needle deflects through an angle `theta`, where `theta` is

A

`30^(@)`

B

`45^(@)`

C

`90^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
In balance condition

`B_(2)=B_(1) tan theta`
`implies tantheta=sqrt(3)/1`
`implies 60^(@)`
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