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A copper wire of cross sectional area 0....

A copper wire of cross sectional area `0.01 cm^2` is under a tension of `20 N`. Find the decrease in the cross sectional area. Young modulus of copper `=1.1xx10^11Nm^-2` and Poisson ratio `0.32`.

A

`1.16 xx 10^(-6) "cm"^(2)`

B

`1.16 xx 10^(-5) cm^(2)`

C

`1.16 xx 10^(-4) cm^(2)`

D

`1.16 xx 10^(-3) cm^(2)`

Text Solution

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The correct Answer is:
A
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