Two charges each of magnitude \( 0.01 \, \text{C} \) and separated by a distance of \( 0.4 \, \text{mm} \) constitute an electric dipole. If the dipole is placed in an uniform electric field ‘\( \vec{E} \)’ of \( 10 \, \text{dyne}/\text{C} \) making \( 30^\circ \) angle with \( \vec{E} \), the magnitude of torque acting on dipole is:
