Question

The freezer in a refrigerator is located at the top section so that ___________

(a) The entire chamber of the refrigerator is cooled quickly due to convection

(b) The motor is not heated

(c) The heat gained from the environment is high

(d) The heat gained from the environment is low

The question was posed to me in an interview for job.

My question is from Thermodynamics topic in section Kinetic Theory of Gases of Engineering Physics I

Answer 1

The correct choice is (a) The entire chamber of the refrigerator is cooled quickly due to convection

For explanation: The upper cold denser air goes down while the lower warmer air goes up. The convection currents so set up quickly cool the chamber of the refrigerator.