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A metal wire 4m long and 2xx10^(-7)sq.m ...

A metal wire `4m` long and `2xx10^(-7)sq.m` in cross-section is streched by a force of `30N`. If the work done in streching that wire is `4.5xx10^(-2)J` the young's modulus of the wire is

A

`2xx10^(11)Pa`

B

`4xx10^(11)Pa`

C

`2xx10^(12)Pa`

D

`4xx10^(12)Pa`

Text Solution

Verified by Experts

The correct Answer is:
A
`(E)/(V) = (1)/(2) xx (("stress")^(2))/(Y)`
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