AP EAMCET · PHYSICS · Thermodynamics
A Carnot engine operates between a source and a sink. The efficiency of the engine is and the temperature of the is . If the efficiency is to be increased to then the temperature of the source must the increased by
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Initial efficiency of the engine is 40%. Therefore, 40100=1-TsinkTsource⇒0.4=1-27+273Tsource⇒Tsource=500 K Efficiency in second case of the engine is 50%. Therefore, 50100=1-TsinkTsource⇒0.5=1-27+273Tsource⇒Tsource=600 K So clearly, the increase…
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