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Consider the following statement: a) In a refrigerator the heat is taken out from the system. b) In a refrigerator the heat is given to the system. c) In a heat pump the heat is taken out from the system. d) In a heat pump the heat is given to the system. Which of the above statements are correct?

Consider the following statement: a) In a refrigerator the heat is taken out from the system. b) In a refrigerator the heat is given to the system. c) In a heat pump the heat is taken out from the system. d) In a heat pump the heat is given to the system. Which of the above statements are correct? Correct Answer Both a and d are correct

CONCEPT:

S.No.

Refrigerator

 Heat pump
1.

A refrigerator is a device that maintains a system or a body at a temperature lower than the surrounding temperature.

A heat pump is a device that maintains a system or a body at a temperature higher than the surrounding temperature.
2.

In the refrigerator, the heat is removed from the low-temperature body and is rejected to the high-temperature body.

In the heat pump, the heat is removed from the low-temperature body and is added to the high-temperature body.
3.

Generally, the surrounding atmosphere acts as the high-temperature body for a refrigerator.

Generally, the surrounding atmosphere acts as the low-temperature body for a heat pump.

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EXPLANATION:

  • In the refrigerator, the heat is removed from the system and is rejected to the surrounding.
  • In the heat pump, the heat is removed from the surroundings and is added to the system.
  • Hence, option 2 is correct.

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