1.

A small bar magnet of moment M is placed in a uniform field H. If magnet makes an angle of 30° with field, the torque acting on the magnet is                       [CPMT 1989]

A.            MH
B.            \[\frac{MH}{2}\]
C.            \[\frac{MH}{3}\]                 
D.            \[\frac{MH}{4}\]
Answer» C.            \[\frac{MH}{3}\]                 


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