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The work done in turning a magnet of mag...

The work done in turning a magnet of magnetic moment 'M' by an angle of `90^(@)` from the meridian is 'n' times the corresponding work done to turn it through an angle of `60^(@)`, where 'n' is given by

A

2

B

1

C

`1/3`

D

`1/4`

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The correct Answer is:
A
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