The temperature of reservoir of Carnot's engine operating with an efficiency of $70\%$ is $1000K.$ The temperature of its sink is ...... $K$
Medium
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(a) $\eta = 1 - \frac{{{T_2}}}{{{T_1}}}$ ==> $\frac{{70}}{{100}} = 1 - \frac{{{T_2}}}{{1000}}$ ==> ${T_2} = 300\,K$
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