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MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
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If $\alpha$ is the coefficient of performance of a refrigerator and ' $Q$ ' is heat released to the hot reservoir, then the heat extracted from the cold reservoir ' $Q_2$ ' is

A
$\frac{\alpha Q_1}{\alpha-1}$
B
$\frac{\alpha-1}{\alpha} Q_1$
C
$\frac{\alpha Q_1}{1+\alpha}$
D
$\frac{1+\alpha}{\alpha} Q_1$
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