Question

15. Temperature difference between body and
surroundings fall from 10°C to 5°C in 10 minutes
Temperature difference between body and
surroundings will fall from 5°C to 2.5°C in (Use
Newton's law of cooling)
(1) 5 minutes
(2) 20 minutes
(3) 10 minutes
(4) Infinite​

Answer 1

Answer:

Newton's law of cooling states that the rate of heat loss of a body is directly proportional to the difference in the temperatures between the body and its surroundings.

So, if in 10 minutes the difference of temperatures between 10°C and 5°C is 5°C.

Then the time taken to make a difference in temperature from 5°C to 2.5°C will be also 10 minutes. (option 3)

Hope this helps...