A body takes 
minutes to cool from 
to 
when the surrounding temperature is 
. The time taken by the body to cool from 
to 
is
A
Greater than 
minutes
minutes
B
Equal to 
minutes
minutes
C
Less than 
minutes
minutes
D
Equal to 
minutes
minutes
Text Solution
Verified by ExpertsThe correct answer is:
B
In first step
⇒ ⇒ 
...(i)
In second step, suppose process takes 
then
...(ii)
On diving equation (i) and (ii)
⇒ ⇒ 
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