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On applying a stress of 20 xx 10^(8) N//...

On applying a stress of `20 xx 10^(8) N//m^(2)` the length of a perfectly elastic wire is doubled. It Young's modulus will be

A

`20 xx 10^(8) N//m^(2)`

B

`30 xx 10^(8) N//m^(2)`

C

`10 xx 10^(8) N//m^(2)`

D

`5 xx 10^(8) N//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Strain `= (L)/(L) = 1 :. Y = "Stress" = 20 xx 10^(8) N//m^(2)`
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