A) 4
B) 16
C) 32
D) 64
Correct Answer: D
Solution :
[d] From Stefan's law, the energy radiated by the sun is given byassumingfor the sun. |
In 1 st case, |
In 2nd case, |
The rate at which energy received at the earth is, |
where,area of the earth, |
distance between the sun and the earth. |
So, In 1st case, |
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