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A 20 N stone is suspended from a wire an...

A 20 N stone is suspended from a wire and its length changes by `1%`. If the Young's modulus of the material of wire is `2xx10^(11)N//m^(2)`, then the area of cross-section of the wire will be

A

`10^(-3)mm^(2)`

B

`10^(-2)mm^(2)`

C

`10^(-1)mm^(2)`

D

`1mm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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