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| Q. |
When temperature difference between liquid and its surroundings is doubled, the rate of loss of heat will: |
| A. | remain same |
| B. | double |
| C. | three times |
| D. | four times |
| Answer» B. double | |
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Explanation: According to Newton's law of cooling, the rate of loss of heat of a body is directly proportional to the difference between the temperature of hot body and temperature of the surroundings, provided that the difference in temperature is small enough. |
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