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A uniform wire (Young's modulus 2xx10^11...

A uniform wire (Young's modulus `2xx10^11 Nm^-2`) is subjected to a longitudinal tensile stress of `5xx10^7Nm^-2`. If the overall volume change in the wire is `0.02%` the fractional decrease in the radii of the wire is

A

`1.5xx10^-4`

B

`1.0xx10^-4`

C

`0.5xx10^-4`

D

`0.25xx10^-4`

Text Solution

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The correct Answer is:
D
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