An ideal refrigerator maintains a temperature of -23°cwhen placed inside a room at 27°C . Heat infiltration into the refrigerator is 0.5 kJ/s. The power required to pump the heat out is:
0.1 kW
0.034 kW
0.45 kW
55 W
0.1 kW
Given:
Refrigerator temperature 
Room temperature 
Heat infiltration or to pass into the refrigerator 
= 0.5 kJ/s
COP of ideal Refrigerator,
Power/work input = 0.1 kW is the power required to pump the heat out.
Hence, the correct option is (A).
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