In the figure shown above, E is the heat engine with efficiency of 0.4 – McqOptions

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1.	In the figure shown above, E is the heat engine with efficiency of 0.4 and R is the refrigerator. If Q2 + Q4 = 3Q1 The COP of the refrigerator will be
A.	3.0
B.	4.5
C.	5.0
D.	5.5
Answer» D. 5.5

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