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When a steel wire is subject to a stress...

When a steel wire is subject to a stress of `3.8xx10^(5) N//m^(2)`, its length is increased by 2 part in a million. The Young's modulus jof steel is

A

`19xx10^(11) N//m^(2)`

B

`9.5xx10^(11) N//m^(2)`

C

`3.8xx10^(11) N//m^(2)`

D

`1.9xx10^(11) N//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Y = ("Stress")/("Strain") = (3.8 xx 10^(5))/(2 xx 10^(-6)) = 1.9 xx 10^(11) N//m^(2)`
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