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Two thermometers A and B exposed to sunlight. The value of A is painted black but that of B is not painted. The correct statement regarding this case is (a) Temperature of B will rise faster (b) Temperature of A will remain more than B (c) Both of A and B show equal rise from the beginning (d) Temperature of A will rise faster than B but the final temperature will be same in both

Two thermometers A and B exposed to sunlight. The value of A is painted black but that of B is not painted. The correct statement regarding this case is

(a) Temperature of B will rise faster
(b) Temperature of A will remain more than B
(c) Both of A and B show equal rise from the beginning
(d) Temperature of A will rise faster than B but the final temperature will be same in both

Grade:Upto college level

2 Answers

Arun
25763 Points
one year ago
The thermometer A which is painted black will show a high temperature that is more than that of thermometer B.

b.) Hence, we can conclude that the dull black surface is a good absorber of heat than any bright shiny surface. 

Any dark colour is a good radiator of heat and hence will become hotter than the other one.
Vikas TU
14149 Points
one year ago
a.) The thermometer A which is painted black will show a high temperature that is more than that of thermometer B.
b.) Hence, we can conclude that the dull black surface is a good absorber of heat than any bright shiny surface.
Any dark colour is a good radiator of heat and hence will become hotter than the other one.

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