Two magnets of moments `M_(1)` and `M_(2)` are rigidly fixed togetherat their centres so that their axes are inclined to each other. This system is suspended ibn a magnitude field of induction `'B'` so that `M_(1)` makes an angles `theta_(1)` and `M_(2)` makes an angles `theta_(2)` with the field direction and unlike poles on either side of the field direction. The resultant torque on the rigid system is