" An ideal refrigerator is used to transfer heat from a freezer at "-23^(@)C" to the surroundings at "27^(7)C" .Its coefficient of performance is :- "

An ideal refrigerator is used to transfer heat from a freezer at -23^@C to the surrounding at 27^@C . Its coefficient of performance is

The cofficient of performance of a refrigerator is 5. If the temperature inside freezer is -20^(@)C , the temperature of the surroundings to which it rejects heat is :

The temperature of a refrigeratoe is kept at 7^(@)C to keep the food articles kept in it in good condition. What is its coefficient of performance, if the room temperature is 37^(@)C

In a mechanical refrigerator, the low temperature coils are at a temperature of -23^(@) C and the compressed gas in the condenser has a temperature of 27^(@)C . The theoretical coefficient of performance is :-

For a refrigerator , heat absorbed from source is 800 J and heat supplied to sink is 500 J then find coefficient of performance is :-