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A Carnot's engine used first an ideal mo...

A Carnot's engine used first an ideal monoatomic gas then an ideal diatomic gas. If the source and sink temperature are `411^(@)C and 69^(@)C` respectively and the engine extracts `1000 J` of heat in each cycle, then area enclosed by the `PV` diagram is

A

100 j

B

300 j

C

500 j

D

700 j

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The correct Answer is:
B
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