A short bar magnet placed with its axis ...

A short bar magnet placed with its axis at `30^(@)` with a uniform external magnetic field of 0.25 T experiences a torque of magnitude equal to `4.5 xx 10^(-2)J`. What is the magnitude of magnetic moment of the magnet ?

`0.36 J//T`

`0.25 J//T`

`1.65 J//T`

`1.05 J//T`

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