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Carnot Cycle

The temperatu...

Question

The temperature of reservoir of Carnot's engine operating with an efficiency of 70% is 1000K. The temperature of its sink is

A

300 K

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B

400 K

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C

500 K

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D

700 K

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Solution

The correct option is A
300 K

$η = 1 - \frac{T_{2}}{T_{1}} \Rightarrow \frac{70}{100} = 1 - \frac{T_{2}}{1000} \Rightarrow T_{2} = 300 K$

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