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A tension of 22N is applied to copper wi...

A tension of 22N is applied to copper wire of crosssectional area `0.02cm^2`,Young's modulus of copper is `1.1xx10^11N/m^2` and poisson's ratio 0.32.The decrease in cross-sectional area will be

A

`1.28 xx 10^(-6) cm^2`

B

`1.6 xx 10^(-6) cm^2`

C

`2.56 xx 10^(-6) cm^2`

D

`0.64 xx 10^(-6) cm^2`

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The correct Answer is:
A
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