STANDARD Physics Newton's Law of Cooling MCQ Question
A glass full of hot milk is poured on the begins to cool gradually. Which of the following incorrect?
The rate of cooling is constant till milk attains the temperature of the surrounding
The temperature of milk falls off exponentially with time
While cooling there is a flow of heat from milk to the surrounding as well as from surrounding to the milk but the net flow of heat is from milk to the surrounding and that is why it cools.
All three phenomenon, conduction, convection and radiation are responsible for the loss of heat from milk to the surroundings.
Correct Answer
Detailed Explanation
According to Newton's law of cooling, the temperature of milk falls exponentially with time, not at a constant rate.
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