Question

The door of a running refrigerator is kept opened in a room. Temperature of the room

• A. Decreases
• B. Increases
• C. Remains constant
• D. May increase or decrease

Answer 1

Answer:

B. Increases

• A refrigerator is a heat pump that absorbs heat from its interior and expels it into the surrounding room via its condenser coils.

• To run this cycle, the compressor performs electrical work, which generates additional heat.

• The total amount of heat released into the room equals the heat extracted from the interior plus the thermal equivalent of the work done by the compressor.

• When the door is kept open, the cooling effect inside and the heating effect outside both occur within the same enclosed space, resulting in a net addition of heat. Consequently, the overall room temperature increases.