Question: A Carnot engine has an efficiency of (80 %), If the cycle is reversed in direction and made to operate as a refrigerator , its

A Carnot engine has an efficiency of \(80 \%\), If the cycle is reversed in direction and made to operate as a refrigerator , its COP will be:

(a) 0.25

(b) 0.5

(c) 0.75

(d) 1.25

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