A hot body is allowed to cool. The surrounding temperature is constant at 
. The body takes time 
to cool from 
to 
and time 
to cool from 
to 
. Then,
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
According to Newton's law of cooling,
where 
is the surrounding temperature.
As per question,
….(i)
and 
Divide (i) by (ii), we get
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