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

A steel wire of lm long and 1\,m{{m}^{2}}cross section area is hang fr

1.	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
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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

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