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Internal Energy

The maximum e...

Question

The maximum efficiency of a heat engine operating between $100^{o} C$ and $25^{o} C$ is

A

20.11%

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B

22.2%

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C

25.17%

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D

None

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Solution

The correct option is A 20.11%
Maximum efficiency of heat engine,
$η = \frac{T_{2} - T_{1}}{T_{2}} = \frac{373 - 298}{373} = 20.11$ % Where ,
$T_{2} = Temperature of source, T_{1} = Temperature of sink$

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