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A gas occupies 2 litre at S.T.P. It is p...

A gas occupies 2 litre at S.T.P. It is provided 300 joule heat so that its becomes 2.5 litre at 1 atm. Calculate change in its internal energy.

A

50 J

B

100 J

C

250 J

D

200 J

Text Solution

Verified by Experts

The correct Answer is:
C
1 litre=1000cc
`=10^(3)xx10^(-6)`
`=10^(-3)m`
W=PdV
`=10^(5)xx4xx10^(-3)`
=400 J
`dU=dQ-PdV`
`=300-50`
`=250J`
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