A short bar magnet placed with its axis at \( 30^{\circ} \) with an...

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A short bar magnet placed with its axis at \( 30^{\circ} \) with an external field of \( 800 \mathrm{G} \) experiences a torque of \( 0.016 \mathrm{Nm} \). The magnetic moment of the magnet is
(a) \( 4 \mathrm{Am}^{2} \)
(b) \( 0.5 \mathrm{Am}^{2} \)
(c) \( 2 \mathrm{Am}^{2} \)
(d) \( 0.40 \mathrm{Am}^{2} \)
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