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AP EAMCET202018 Sep 2020Morning ShiftPhysicsThermodynamicsActual

The door of an operating refrigerator is kept open. As a result, the temperature of the room will

Options

  1. Aremain unchanged
  2. Bincreases
  3. Cdecreases
  4. Ddepends on the contents inside the refrigerator

Correct answer

B. increases

Step-by-step solution

A refrigerator is a heat engine which extracts heat from low temperature reservoir and transfer it to high temperature. If a refrigerator's door is kept open, then room will become hot, because in this situation, refrigerator exhaust more heat into the room than earlier. Hence, temperature of the room increases and room becomes hot.

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