The shear stress in a circular shaft of radius 'r' subjected to torsion, is maximum at a point
AAt centre of the shaft
BAt a distance of 'r/2' from centre of the shaft
CAt a distance of 'r/π' from centre of the shaft
DAt the surface of the shaft
AAt centre of the shaft
BAt a distance of 'r/2' from centre of the shaft
CAt a distance of 'r/π' from centre of the shaft
DAt the surface of the shaft
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