Question

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 1

torque is calculated by using the formulae t=niabcos (theta)