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Q.

A Carnot engine operates between 327 0C and 27 0C. How much heat (in joules) does it take from the 327 0C reservoir for every 100 J of work done?

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a

100 J

b

200 J

c

300 J

d

400 J

answer is B.

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Detailed Solution

W = Q1 - Q2As  η = Q1-Q2Q1 = T1-T2T1∴ Q1 = (T1T1-T2)W = 600600-300×100              = 200 J
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A Carnot engine operates between 327 0C and 27 0C. How much heat (in joules) does it take from the 327 0C reservoir for every 100 J of work done?