defence exam Navy SSR (Medical) Mock Test Series 2025 Physics Thermodynamics Carnot engine

A Carnot engine takes 3 × 106 cal. of heat from a reservoir at 627°C, and gives it to a sink at 27°C. The work done by the engine is

1
4.2 × 106J 
2
8.4 × 106J 
3
16.8 × 106J 
4
zero
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