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The efficienc...

Question

The efficiency of Carnot engine when source temperature is $T_{1}$ and sink temperature is $T_{2}$ will be

A

\frac{T_{1} - T_{2}}{T_{1}}

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B

\frac{T_{2} - T_{1}}{T_{2}}

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C

\frac{T_{1} - T_{2}}{T_{2}}

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D

\frac{T_{1}}{T_{2}}

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Solution

The correct option is D $\frac{T_{1} - T_{2}}{T_{1}}$
Efficiency of Carnot engine $= η = \frac{T_{1} - T_{2}}{T_{1}}$
where, $T_{1}$ = source temperature
$T_{2}$ = sink temperature

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