If the door of a refrigerator is kept open in a closed room then room :

Options

A. heated
B. cooled
C. heated or cooled depending upon the initial temperature of the room
D. Neither cooled nor heated.

Answer

To solve the question, "If the door of a refrigerator is kept open in a closed room, then what happens to the room?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Function of a Refrigerator**:
A refrigerator operates by removing heat from its interior (which is at a lower temperature) and expelling that heat to its surroundings (which is at a higher temperature).

**Hint**: Recall that refrigerators work based on the principles of thermodynamics, specifically the second law, which involves heat transfer from cold to hot.

2. **Identify the Initial Conditions**:
In this scenario, we have a closed room at a normal temperature (around 25-27°C) and a refrigerator that is designed to maintain a lower temperature inside.

**Hint**: Consider the typical temperature range of a refrigerator, which is usually much lower than room temperature.

3. **Analyze the Effect of Leaving the Door Open**:
When the refrigerator door is left open, it will continuously extract heat from the room and transfer it to the room itself. This means that the refrigerator is working to cool its interior but is simultaneously releasing that heat back into the room.

**Hint**: Think about the energy balance; the energy removed from the refrigerator is not lost but is added back to the room.

4. **Determine the Overall Effect on Room Temperature**:
Since the refrigerator is expelling heat into the room while trying to cool its interior, the net effect will be an increase in the room's temperature. The energy consumed by the refrigerator (in the form of electrical energy) also contributes to heating the room.

**Hint**: Remember that energy conservation principles apply; energy is neither created nor destroyed, but can change forms.

5. **Conclusion**:
Therefore, if the door of the refrigerator is kept open in a closed room, the room will ultimately get heated.

**Final Answer**: The correct option is that the room will be heated.

### Summary of the Steps:
1. Understand how a refrigerator works.
2. Identify the initial temperature conditions.
3. Analyze the effect of an open refrigerator door.
4. Determine the overall impact on the room's temperature.
5. Conclude that the room will be heated.