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On loading a metal wire of cross secti...

On loading a metal wire of cross section `10^(-6) m^(2)` and length `2m` by a mass of `210kg`, it extends by `16mm` and suddenly broke form the point of support . If denstiy of that metal is `8000K gm^(-3)` and its specific heat is `420J Kg^(1) K^(-1)` the ride in temperature of wire is

A

`2.5^(@)C`

B

`5^(@)C`

C

`6^(@)C`

D

`10^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta t = (Fe)/(2A L rho S)`
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