NEET2021Physics-Newton's Law of Cooling
NEET 2021 Physics Newton's Law of Cooling MCQ Question
Type: MCQ-numerical-Medium-Class 11
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool from 80°C to 60°C at a room temperature same at 20°C is :
A
13/10 t
B
13/5 t
C
10/13 t
D
5/13 t
Correct Answer
Option B
Detailed Explanation
Using Newton's law of cooling, the rate of cooling is proportional to the temperature difference. Calculate the time using the given conditions.
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