(A) : hollow shaft is found to be stronger than a solid shaft made of same material and same quantity. (R): Rigidity modulus is the ratio of shearing stress to shearing strain.

(A) : hollow shaft is found to be stronger than a solid shaft made of

1.	(A) : hollow shaft is found to be stronger than a solid shaft made of same material and same quantity. (R): Rigidity modulus is the ratio of shearing stress to shearing strain.
Answer» Both .A. and .R. are TRUE and .R. is the correct explanation of .A. Both .A. and .R. are true and .R. is not the correct explanation of .A. A. is true but .R. is FALSE A. is false but .R. is true Answer :2