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← ScienceWhich outcome impairs a refrigerator's efficiency undergoing vapor-compression cycle?
A)Irreversible adiabatic compression of refrigerant✓
B)Isothermal expansion without phase change
C)Reversible heat transfer in the condenser
D)Subcooling to liquid at constant pressure
💡 Explanation
A decrease in refrigerator efficiency emerges due to irreversible adiabatic compression, because additional work input increases exhaust temperature via frictional heating; therefore efficiency declines, rather than idealized reversible compression conserving system entropy.
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