A cord of mass m length L, area of cross...

A cord of mass m length L, area of cross section A and Young's modulus y is hanging from a ceiling with the help of a rigid support. The elogation developed in the wire due to its own weight is

A

zero

B

`(mgL)/(2AY)`

C

`(mgL)/(AY)`

D

`(2mgL)/(AY)`

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The correct Answer is:

B

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