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A wire of Young's modulus 2 xx 10^11 N/m...

A wire of Young's modulus `2 xx 10^11 N/m^2` is stretched by a force so as produce a stress of `4 xx 10^6 N/m^2` . The energy stored per unit volume of the wire is

A

a)`2 xx 10^(-5) "joule"/m^3`

B

b)` 10^(-5) "joule"/m^3`

C

c)`80 "joule"/m^3`

D

d)`40 "joule"/m^3`

Text Solution

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The correct Answer is:
D
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