The maximum shear stress in a solid shaft of circular cross-section having diameter d subjected to a torque T is . If the torque is increased by four times and the diameter of the shaft is increased by two times, the maximum shear stress in the shaft will be

The maximum shear stress in a solid shaft of circular cross-section ha

1.	The maximum shear stress in a solid shaft of circular cross-section having diameter d subjected to a torque T is . If the torque is increased by four times and the diameter of the shaft is increased by two times, the maximum shear stress in the shaft will be
A.	2
B.
C.	/2
D.	/4
Answer» D. /4