An ideal mono atomic gas is expanded from state point A to state point B by the process AB. If W be the work done by the gas and ∆U be the change in its internal energy, then W∆U is equal to
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a
34
b
23
c
14
d
13
answer is D.
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Detailed Solution
At A, P0V0=nRT0 at B, TB=2P0.2V0nR=4T0Now, W=12P0+2P02V0-V0=32P0V0∆U=n.CvTB-TA=n32R4T0-T0=92nRT0=92P0V0∴W∆U=3P0V0292P0V0=13