railway RRB JE (CBT I + CBT II) Mock Test 2024 Refrigeration and Air Conditioning Refrigeration Cycles and Devices Heat Engine, Heat Pump and Refrigerator
A refrigeration unit has a COP of 4 and extracts 10 kJ of heat from the cold reservoir. If this machine works as a heat pump, how much heat will it deliver to the environment?
1
2 kJ
2
2.5 kJ
3
12.5 kJ
4
25 kJ