A refrigerator removes of heat from the food compartment when of mechanical work is…

PHYSICS · Single correct · CBSE · Physics · Thermodynamics · Thermodynamics

Problem

A refrigerator removes

240\,\text{J}

of heat from the food compartment when

60\,\text{J}

of mechanical work is supplied to it. What is its coefficient of performance (COP)? (a) 5 (b) 3 (c) 4 (d) 1.25