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VITEEE 2009 Paper

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Question : 15

Total: 120

An ideal gas is subjected to cyclic process involving four thermodynamics states, the amounts of heat (Q) and work (W) involved in each of these states are
Q1=6000‌J,Q2=−5500‌J,Q3=−3000‌J,Q4=3500‌J
W1=2500‌J,W2=−1000‌J,W3=−1200‌J,W4=xJ.
The ratio of the net work done by the gas to the total heat absorbed by the gas is η. The values of x and η respectively are

500 ; 7.5%
700 ; 10.5%
1000 ; 21%
1500 ; 15%

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