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If 'W' Joule is the work done in rotatin...

If 'W' Joule is the work done in rotating the magnet from the field direction to a position that makes an angle `60^@` with the direction of the field, the torque required to hold the magnet in that direction is

A

`(W) /( 2) N-m`

B

`(W )/( sqrt(3)) N-m`

C

W N-m

D

`sqrt(3) WN-m`

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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MAGNETISM AND MATTER )
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