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A metal rod of length l, cross-sectional...

A metal rod of length l, cross-sectional area A, Young's modulus Y and coefficient of linear expansion `alpha` is heated to `t^(@)C`. The work that can be performed by the rod when heated is

A

`(YAalphaLt^2)/(2)`

B

`(YAalpha^2Lt^2)/(2)`

C

`(YAalpha^2 L^2t^2)/(2)`

D

`(YAalphaLt)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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