Asher took two identical steel bowls, one painted black and the other painted white on the outside. He then filled them with equal amounts of water at room temperature and left them next to each other in the Sun.
After an hour, he noticed that the water in the black bowl was hotter than the water in the white bowl.
Which of the following methods of heat transfer is MAINLY responsible for this difference in temperature?
A. conduction in the bowls
B. radiation absorbed by the bowls
C. convection in the water in the bowls
D. convection in the air around the bowls
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Answer:
B. radiation absorbed by the bowls
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THE REASON BEHIND THIS IS
BLACK OR DARK COLOURS ABSORB MORE LIGHT THAN LIGHTER COLOURS LIKE WHITE,YELLOW ETC.
ANSWER IS
OPTION B
RADIATION ABSORBED BY THE BOWLS
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