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A uniform steel rod of length 1m and are...

A uniform steel rod of length 1m and area of cross section `20 cm^2` is hanging from a fixed support. Find the increase in the length of the rod.

A

`1.923xx10^(-5)cm`

B

`2.923xx10^(-5)cm`

C

`1.123xx10^(-5)cm`

D

`3.123xx10^(-5)cm`

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