The twist at the free end of the shaft shown in figure is A 1/2- (a) (T - 2T) l GJ B T2 1/2 (J = Polar movement of Inertia of the shaft and G= Modulus of Rigidity) (b) (c)(2T+T) (d) GJ l C 2GJ T -(T - 2T) (2T+T) l 2GJ