A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radian per second. If the horizontal component of earth’s magnetic field is 0.2 × 10–4T, then the e.m.f. developed between the two ends of the conductor is
(a) 5μV
(b) 50μV
(c) 5mV
(d) 50mV.