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Heat and Thermodynamics

Section: Physics

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Question : 1

Total: 69

The efficiency of a Carnot engine operating with a hot reservoir kept at a temperature of 1000 K is 0.4 . It extracts 150 J of heat per cycle from the hot reservoir. The work extracted from this engine is being fully used to run a heat pump which has a coefficient of performance 10 . The hot reservoir of the heat pump is at a temperature of 300 K . Which of the following statements is/are correct?

[JEE Adv 2025 P2]

Work extracted from the Carnot engine in one cycle is 60 J .
Temperature of the cold reservoir of the Carnot engine is 600 K .
Temperature of the cold reservoir of the heat pump is 270 K .
Heat supplied to the hot reservoir of the heat pump in one cycle is 540 J .

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