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A load of 31.4 kg is suspended from a wi...

A load of 31.4 kg is suspended from a wire of radius `10^(-3)` m and density `9xx10^3 kg//m^3` Calculate the change is temperature of the wire if 75% of the work done is converted into heat. The Young's modulus and the specific heat capactiy of the meterial of the wire are `9.8 xx 10^(10) N//m^2 and 490 J//kg//K` respectively.

A

`4.33xx10^(-2)K`

B

`8.33xx10^(-3)K`

C

`2.44xx10^(-5)K`

D

`6.22xx10^(-2)K`

Text Solution

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The correct Answer is:
B
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