A magnet of length \( 0.1 \mathrm{~m} \) and pole strength \( 10^{-4} \mathrm{~A} \mathrm{~m} \)...
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0A magnet of length \( 0.1 \mathrm{~m} \) and pole strength \( 10^{-4} \mathrm{~A} \mathrm{~m} \) is kept in a magnetic field of \( 30 \mathrm{~Wb} / \mathrm{m}^{2} \) at an angle \( 30^{\circ} \). The couple acting on it is \( \ldots \times 10^{-4} \mathrm{~N} \mathrm{~m} \).
(A) \( 7.5 \)
(B) \( 1.5 \)
(C) \( 3.0 \)
(D) \( 6.0 \)
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