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The length of a rod is 20 cm and area of...

The length of a rod is `20 cm` and area of cross-section `2 cm^(2)`. The Young's modulus of the material of wire is `1.4 xx 10^(11) N//m^(2)`. If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

A

`8.57 times 10^-6`

B

`22.5 times 10^-4`

C

`9.8 times 10^-5`

D

`45.0 times 10^-5`

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SL ARORA-Mechanical Properties of Solids-Example
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