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A magnetic needle lying parallel to a ma...

A magnetic needle lying parallel to a magnetic field requires W units of work to turn through `60^(@)` . The external torque required to maintain the magnetic needle in this position is

A

W

B

2 W

C

`(sqrt3)/(2) W`

D

`sqrt3` W

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The correct Answer is:
D
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AAKASH INSTITUTE-MAGNETISM AND MATTER -Assignment Section - B Objective Type Questions (One option is correct)
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