If the coefficient of performance of a refrigerator is $5$ and it operates at a room temperature of $27\,^{\circ}C$,find the temperature inside the refrigerator.

In a mechanical refrigerator, the low temperature coils are at a temperature of $-23^{\circ}C$ and the compressed gas in the condenser has a temperature of $27^{\circ}C$. The theoretical coefficient of performance is

The door of an operating refrigerator is kept open. As a result,the temperature of the room will

Assertion $(A)$: $A$ room can be cooled by opening the door of a refrigerator in it.
Reason $(R)$: Heat always flows from a body at higher temperature to a body at lower temperature.

Write the formula for the coefficient of performance of a heat pump.

$A$ refrigerator consumes an average $35 \ W$ power to operate between temperatures $-10^{\circ}C$ and $25^{\circ}C$. If there is no loss of energy,how much average heat per second does it transfer? (in $J/s$)