The radiant energy from the Sun incident normally at the surface of earth is `20kcal//m^(2)` min
Channel: Doubtnut
Date: 09/02/2020

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 ? .