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Q.

A Carnot engine operates with source at 127 °C and sink at 27 °C. If the source supplies 40 k J of heat energy, the work done by the engine is :

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a

30 kJ

b

10 kJ

c

4 kJ

d

1 kJ

answer is B.

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Detailed Solution

η=1-T2T1=WQ1⇒1-300400=W40⇒W= 10 kJ
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