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What amount of work is done in increasin...

What amount of work is done in increasing the length of a wire through unity?

A

`(YL)/(2A)`

B

`(YL^(2))/(2A)`

C

`(YA)/(2L)`

D

`(YL)/A`

Text Solution

Verified by Experts

The correct Answer is:
C
Work done `=1/2Fxx"Extension"`
`=1/2xx(YA)/Lxx1`
`(YA)/(2L)`
`Y=(FxxL)/(Axx1)`
`F=(YA/L)`
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