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Question

The ratio of work done by an ideal diatomic gas to the heat supplied by the gas in an isobaric process is

A
57
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B
35
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C
27
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D
53
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Solution

The correct option is A 27
The work done by an ideal diatomic gas is given as W=ΔQΔU=nCpΔTnCvΔT=n72RΔTn52RΔT=nRΔT
heat supplied by the gas in isobaric process is
Q=nCpΔT=n72RΔT

Thus we get the ratio as-
WQ=27

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