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Question
If a refrigerator’s door is kept open, will the room become cool or hot? Explain.
Solution
The temperature of the room will increase and the room will become hot if the refrigerator’s door is left open. This is because the refrigerator, being a heat engine, extracts the heat from lower temperatures and transfers it to the higher temperature. If a refrigerator’s door is kept open, the refrigerator will transfer more heat inside the room than earlier.
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