By opening the door of a refrigerator which is inside a room, you can\

Question

Professor PC Thomas Classes · Answer

In a refrigerator a quantity of heat $Q$ is taken from within the refrigerator and a quantity of heat $\mathrm{Q}_{2}+\mathrm{W}$ is given to the room where W is the work done by the motor. Hence the temperature will increase. If the refrigerator is kept open and if it works, a quantity of heat $\mathrm{Q}_{2}$ is taken from the room and a quantity of heat $\mathrm{Q}_{2}+\mathrm{W}$ is given to the room. So the temperature of the room will increase slightly.