Q98 / 180 · NEET 2020 (Phase 2) · Physics

The efficiency of a Carnot engine depends upon

A
the temperature of the sink only
Correct answer
B
the temperatures of the source and sink
C
the volume of the cylinder of the engine
D
the temperature of the source only

Solution

First, recall the formula of efficiency of Carnot engine in terms of source temperature and sink temperature, $η = 1 - \frac{T_{2}}{T_{1}}$ , here the temperature of the source is always higher than the temperature of the sink but when we change source and sink temperate then the efficiency will change, $T_{1} =$ the temperature of the source and, $T_{2} =$ the temperature of the sink.

Hence, the correct answer is option: 'B'.

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