STANDARDPhysics-Thermodynamics
STANDARD Physics Newton's Law of Cooling MCQ Question
Type: MCQ-numerical-Medium-Class 11
A pan filled with hot food cools from 94°C to 86° in 2 minutes when the room temperature is at 20°C. The time taken to cool it from 71°C to 69°C is
A
12 s
B
22 s
C
32 s
D
40 s
Correct Answer
Option D
Detailed Explanation
Using Newton's Law of Cooling, the rate of cooling is proportional to the temperature difference. The time taken to cool from 71°C to 69°C is calculated using the same proportionality constant as the initial cooling.
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