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A magnetic needle lying parallel to a ma...

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

A

`2 X `

B

X

C

`(sqrt3)/(2)`X

D

`sqrt3` X

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The correct Answer is:
D
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AAKASH INSTITUTE-MAGNETISM AND MATTER -Assignment Section - A Objective Type Questions (One option is correct)
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  17. Effect due to which earth's magnetism exist is called

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  18. The location of the north magnetic pole is a latitude of

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