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One end of a horizontal thick copper wir...

One end of a horizontal thick copper wire of length 2L and radius 2R is welded to an end of another horizontal thin copper wire of length L and radius R. when the arrangement is stretched by applying forces at two ends, the ratio of the elongation in the thin wire to that in thick wire is

A

`(pir^2Yd^3)/(2L^2)`

B

`(pir^2Yd^2)/(2L^2)`

C

`(pi^2Y.2L^2)/(d^2)`

D

`(pi^2Y.2L)/(d)`

Text Solution

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The correct Answer is:
B
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