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

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

(a) 1 KJ 

(b) 4 KJ 

(c) 10 KJ 

(d) 30 KJ

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Correct answer is (c) 10 KJ

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