A refrigerator with its door open is left running in a closed room. If

1.	A refrigerator with its door open is left running in a closed room. If the fan is also on and heat transfer from the room is negligible, the room temperature will1.Tall for some time and then rise2.keep on increasing3.decrease continuously4.remain unaffected
Answer» Correct Answer - Option 2 : keep on increasing Explanation: If we take the entire room including the air and the refrigerator as the system, which is an adiabatic closed system since the heat transfer from the room is negligible. The only energy interaction involved is the electric energy crossing the system boundary and entering the room. The conservation of energy required the energy content of the room to increase by an amount equal to the amount of energy drawn by the refrigerator. The refrigerator or its motor does not store this energy. Therefore this energy must now be in room air and it will manifest itself as a rise in the air temperature.

A refrigerator with its door open is left running in a closed room. If the fan is also on and heat transfer from the room is negligible, the room temperature will1.Tall for some time and then rise2.keep on increasing3.decrease continuously4.remain unaffected

Answer» Correct Answer - Option 2 :

keep on increasing

Explanation:

If we take the entire room including the air and the refrigerator as the system, which is an adiabatic closed system since the heat transfer from the room is negligible.
The only energy interaction involved is the electric energy crossing the system boundary and entering the room.
The conservation of energy required the energy content of the room to increase by an amount equal to the amount of energy drawn by the refrigerator.
The refrigerator or its motor does not store this energy.
Therefore this energy must now be in room air and it will manifest itself as a rise in the air temperature.

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A refrigerator with its door open is left running in a closed room. If the fan is also on and heat transfer from the room is negligible, the room temperature will1.Tall for some time and then rise2.keep on increasing3.decrease continuously4.remain unaffected

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