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Liquid is filled in a vessel which is ke...

Liquid is filled in a vessel which is kept in a room with, temperature `20^(@)C`. When the temperature of the liquid is `80^(@)C` then it loses heat at the rate of 60 cal/second. What will be the arte of loss of heat when the temperature of the liquid is `40^(@)C` ?

A

180 cal/s

B

40 cal/s

C

50 cal/s

D

20 cal/s.

Text Solution

Verified by Experts

The correct Answer is:
D
Rate of loss of heat `prop` temp. difference between the body and surroundings. Since temp diff. becomes 1/3rd so rate of loss of heat also becomes 1/3rd.
Correct choice (d).
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