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A metal bar of mass 1.5 kg is heated at ...

A metal bar of mass 1.5 kg is heated at atmospheric pressure. Its temperature is increased from 30 °C to 60 °C. Then the work done in the process is (Volume expansion coefficient of the metal = `5xx10^(-5)^(@)C^(-1)` ,
density of the metal `=9xx10^3kgm^(-3)`
Atmospheric pressure `=1xx10^5Pa`)

A

`25xx10^(-3)J`

B

`2.5xx10^(-3)J`

C

`12.5xx10^(-3)J`

D

`1.25xx10^(-3)J`

Text Solution

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The correct Answer is:
A
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