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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

`(YAalphat)xx(lalphat)`

B

`1/2(YAalphat)xx(lalphat)`

C

`1/2(YAalphat)xx1/2(lalphat)`

D

`2(YAalphat)xx(lalphat)`

Text Solution

Verified by Experts

The correct Answer is:
B
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