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(A) The efficiency $\eta$ of a Carnot engine is given by the formula: $\eta = 1 - \frac{T_2}{T_1}$,where $T_1$ is the temperature of the source and $T

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Depends on the temperatures of the source and sink; independent of the working substance.

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(A) The efficiency $\eta$ of a Carnot engine is given by the formula: $\eta = 1 - \frac{T_2}{T_1}$,where $T_1$ is the temperature of the source and $T_2$ is the temperature of the sink.From this formula,it is clear that the efficiency depends only on the temperatures of the source and the sink ($T_1$ and $T_2$).It is independent of the nature of the working substance used in the engine and the design of the engine.

The efficiency of a Carnot engine depends on what,and of what is it independent?

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