📝 Multiple Choice Question
General-science
Two metallic spheres of the same mass are heated to the same temperature and then left in the same surroundings. If sphere X is painted black and sphere Y is polished, which of the following is true?
A
sphere y will cool faster
B
sphere x will cool faster
C
both will cool at the same rate
D
cooling depends on the density of the metal
Explanation
Black bodies are better emitters of radiation than polished surfaces, leading to a faster rate of cooling for sphere X.
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