Which of the following statements about a refrigerator is are correct 1 It converts e...........

Science Affairs Physics

Which of the following statements about a refrigerator is/are correct?

1. It converts electrical energy into heat energy.

2. It converts electrical energy into mechanical energy.

3. It transfers heat from a high temperature to a low temperature.

4. It transfers heat from a low temperature to a high temperature.

Choose the correct option

1 and 3

2 and 3

1 and 4

4 only

Only statements 1&4 are correct.

The device that transfers heat from lower temperature to higher temperature by doing some work is called a refrigerator. In-home refrigerators, the heat is removed from the device (lower temperature) to the surrounding (higher temperature).
This means that energy will not flow from cold to hot regions without outside assistance. We have to work to transfer heat from lower temperature to higher temperature.
In a refrigerator, electrical energy is converted into mechanical energy by a motor. The motor drives a compressor, and this compresses and heats the refrigerant. Mechanical energy is converted into thermal energy in this process.

Hence option 3rd is correct.