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The radiant energy from the Sun incident...

The radiant energy from the Sun incident normally at the surface of earth is `20kcal//m^(2)` min What would have been the radiant energy incident normally on the earth if the sun had a temperature twice of the present one ? .

A

160 kcal/`m^2`-min

B

40 kcal/`m^2`-min

C

320 kcal/`m^2`-min

D

80 kcal/`m^2`-min

Text Solution

Verified by Experts

The correct Answer is:
C
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