It is known for a certain liquid that it takes 70 s to cool from 
to 
and 30 s to cool from 
to 
. Figure out the ambient temperature of the room.
Text Solution
Verified by ExpertsThe correct answer is:
B
If the temperature of body decreases from 
and 
and temperature of surroundings is 
then according to Newton's law of cooling:
Average excess of temperature 
On dividing both the equations, we get
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