A house refrigerator with its door open is switched on in a close

| A house refrigerator with its door open is switched on in a closed room. The air in the room is

A. Cooled

B. Remains at same temperature

C. Heated

D. Heated or cooled depending on atmospheric pressure

Please scroll down to see the correct answer and solution guide.

Right Answer is: C

SOLUTION

Concept:

As the room is closed, so no heat will go outside. Now, the refrigerator working is as shown.

Q₁ = Q₂ + W

Now, in our case when the door is open, then the Q₂ is heat absorbed from the entire room instead of just the refrigerator compartment and Q₁ is the heat rejected to the room.

As of Q₁ > Q₂

⇒ The room will heat up.