Steel shaft and brass shaft of same length and diameter are connected by a flange coupling. The
assembly is rigidly held at its ends and is twisted by a torque through the coupling. Modulus of
rigidity of steel is twice that of brass. If torque of the steel shaft is 500 Nm, then the value of the
torque is brass shaft will be
(a) 250 Nm (b) 354 Nm (c) 500 Nm (d) 708 Nm