A conducting rod of length $l=2\;cm$ moves with velocity 12 m/s at an angle $30^{\circ}$ to a magnetic field produced between two square faced poles of side 2 cm. If flux leaving the face is $5 \mu Wb$ the induces emf is

Question

$(a)\;30\;mv \\(b)\;15\;mv \\ (c)\;3.0\;mv \\ (d)\;1.5\;mv$