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Consider two wires X and Y. The radius o...

Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is

A

equal to that on X

B

thrice that on X

C

nine times that on X

D

Half that on X

Text Solution

Verified by Experts

The correct Answer is:
C
`(S_X)/(S_Y)=((r_2)^(2))/((3r_2)^(2))`
`(S_X)/(S_Y)=(1)/(9)`
`S_(Y)=9S_(X)`
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