Given below are the four cases in which certain heat transfer is taking place: 1. Ice is melting in a glass full of water 2. Water is boiling in an open container 3. A metal rod is heated in a furnace 4. A cup of coffee is allowed to cool on a table In which of the above cases, the Newton's Law of Cooling is applicable?
- A. 1 only
- B. 4 only ✓
- C. 1 and 4 only
- D. 1, 2 and 3
Correct Answer: B. 4 only
Explanation
Newton's Law of Cooling applies to the rate of heat loss of a body to its surrounding environment via convection and radiation (such as a cup of coffee cooling down on a table), where the temperature difference is not excessively large.
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