The coefficient of performance of a refrigerator is defined as:

$A$ Carnot freezer takes heat from water at $0\,^{\circ}C$ inside it and rejects it to the room at a temperature of $27\,^{\circ}C$. The latent heat of ice is $336 \times 10^3\, J\,kg^{-1}$. If $5\, kg$ of water at $0\,^{\circ}C$ is converted into ice at $0\,^{\circ}C$ by the freezer,then the energy consumed by the freezer is close to

If a refrigerator of coefficient of performance of $5$ has a freezer at a temperature of $-13^{\circ} C$,then the room temperature is (in $^{\circ} C$)

By opening the door of a refrigerator placed inside a room,you:

The coefficient of performance of a refrigerator working at a temperature of $27^{\circ} C$ is $5$. Find the temperature inside the refrigerator. (in $K$)

Why does the coefficient of performance of a refrigerator become infinity?