The efficiency of Carnot engine depends upon temperature of the
Correct answer: D. Source and sink.
- A. Sink only.
- B. Source only.
- C. Surrounding.
- D. Source and sink.
Explanation
The efficiency of a Carnot engine is determined by the temperatures of both the heat source (T1) and the heat sink (T2). The efficiency is given by the formula: η = 1 - (T2/T1), where T1 and T2 are the temperatures of the source and sink respectively, measured in Kelvin. This means that both the source and sink temperatures are critical in determining the efficiency, making option D the correct choice. The other options, which suggest dependency on only one or neither of these temperatures, are incorrect because they do not accurately reflect how efficiency is calculated.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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