Thermal Properties of Matter - Result Question 41
42. The radiant energy from the sun, incident normally at the surface of earth is . What would have been the radiant energy, incident normally on the earth, if the sun had a temperature, twice of the present one?[1998]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 42. (c)
Solution:
- (c) According to Stefan’s law,