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The coefficient of a refrigerator can be greater than 1. True or False?

(a) True

(b) False

This question was addressed to me during an online exam.

Origin of the question is Thermodynamics in section Thermodynamics of Physics – Class 11

1 Answer

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Best answer
Right option is (a) True

The explanation is: The coefficient of a refrigerator is defined as α = Q2/W,

where Q2 is heat extracted from a cold reservoir and W is work done.

α = Q2/( Q1 – Q2).  

Therefore α can be less than or greater than one.

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