Question

A steel wire of lm long and 1\,m{{m}^{2}}
cross section area is hang from rigid end. When weight of 1kg is hung from it then change in length will be (given Y=2\times {{10}^{11}}N/{{m}^{2}})
[RPMT 2000]
A) 0.5 mm B) 0.25 mm C) 0.05 mm D) 5 mm

Answer 1

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