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When a steel rod of length 2m is compres...

When a steel rod of length 2m is compressed its length decreases by 0.1cm. Find the work done per unit volume against the compressive stress.

A

`2.5xx10^(4)Jm^(-3)`

B

`1.25xx10^(4)Jm^(-3)`

C

`5.0xx10^(4)Jm^(-3)`

D

`7.5xx10^(4)Jm^(-3)`

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