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

Explain the working of refrigerators/heat pumps and their coefficient of performance.

The freezing compartment of a refrigerator is at $0^{\circ} C$ and the room temperature is $27.3^{\circ} C$. Calculate the work done by the refrigerator to freeze $1 \ g$ of water at $0^{\circ} C$. (Given: $L_{\text{ice}} = 80 \ cal \ g^{-1}$) (in $J$)

If a refrigerator's door is kept open,will the room become cool or hot? Explain.

Is the coefficient of performance of a refrigerator constant?

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.