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A magnet of dipole moment 2Am^(2) is def...

A magnet of dipole moment `2Am^(2)` is deflected through `30^(@)` from magnetic meridian. The required deflecting torque is `(B_(H)=0.4xx10^(-4)T)`

A

`0.4xx10^(-4)Nm`

B

`0.4 Nm`

C

`0.2 xx10^(-4) Nm`

D

`0.8 Nm`

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The correct Answer is:
A
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