A pan filled with hot food cools form 
to 
in 2 minutes. When the room temperature is 
. How long will it cool from 
to 
?
Text Solution
Verified by ExpertsThe correct answer is:
B
According to Newton's law of cooling
(i)
Here 
Using eqn (i),
… . (ii)
For fall in temperature from 
to 
,
Using eqn (i),
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