Hot water cools from 
to 
in the first 10 minutes and to 
in the next 10 minutes. Then the temperature of the surroundings is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
According to Newton's law of cooling
where 
is the temperature of the surroundings
… .(i)
Divide (i) by (ii), we get 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The unit of Stefan's constant is
The sprinkling of water reduces slightly the temperature of a closed room because
Two identical rods and made of two different metals having thermal conductivities in the ratio a…
The surface temperature of the sun which has maximum energy emission at is . The temperature of a…
The coefficient of the thermal conductivity of copper is 9 times that of steel. In the composite cy…
If a black body emits 0.5 joules of energy per second when it is at , then the amount of energy em…