A semicircle loop PQ of radius 'R' is moved with velocity 'v' in transverse magnetic field as shown in figure . The value of induced emf . Between the ends of loop is :-

Options

A. Bv `(pi r)`, 'P' at high potential
B. 2 BRv, end P at high potential
C. 2 BRv, end Q at high potential
D. `B(pi R^(2))/(2)v`, end P at high potential

Answer

c