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The internal energy of a solid also incr...

The internal energy of a solid also increases when heat is transferred to it from its surroundings. A 5 kg solid bar is heated at atmospheric pressure. Its temperature increases from `20^@C` to `70^@C`. The linear expansion coefficient of solid bar is `1xx10^(-3)//^(@)C`. The density of solid bar is `50 kg//m^3`. The specific heat capacity of solid bar is `200 J//kg C^@`. The atmospheric pressure is `1xx10 ^5N//m^2`.
The work done by the solid bar due to thermal expansion, under atmospheric pressure is

A

500 J

B

100 J

C

1500 J

D

2000 J

Text Solution

Verified by Experts

The correct Answer is:
C
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