The coefficient of performance of a refrigerator is 5 . If the temp...

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The coefficient of performance of a refrigerator is 5 . If the temperature inside freezer is \( -20^{\circ} \mathrm{C} \), the
\( \mathrm{P} \) temperature of the surroundings to which it rejects

W. heat is
a) \( 11^{\circ} \mathrm{C} \)
(b) \( 21^{\circ} \mathrm{C} \)
\( 31^{\circ} \mathrm{C} \)
(d) \( 41^{\circ} \mathrm{C} \)
(2015)
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