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CGP EDU Academic Team
Published on: September 12, 2026
A body takes T minutes to cool from 62 0 C to 61 0 C when the surrounding temperature is 30 0 C. The time taken by the body to cool from 46 0 C to 45.5 0 C is
Text Solution
Verified by ExpertsThe correct answer is:
A
According to Newton's Law of Cooling,
Rate of cooling 
(Temperature of body - Temperature of surroundings)
From 
to 
, average excess temperature 
From 
to 
, average excess temperature 
Since the temperature difference is smaller in the second case, the rate of cooling is slower, so more time is needed.
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