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A uniform rod weights W, has length L an...

A uniform rod weights W, has length L and cross sectional area a. The rod is suspended from one of its ends. The young's modulus of its material is Y. Increase in length of the rod will be

A

zero

B

`(WL)/(2aY)`

C

`(WL)/(aY)`

D

`(2WL)/(aY)`

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The correct Answer is:
B
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