The radiation received by the earth's surface on a clear day with the sun overhead is 1.1 kw/m² and an additional 0.3 kw/m² is absorbed by the earth's atmosphere. Calculate area of the sun.
Given that
Diameter of sun (d_s) = 1.39 x 10⁹ m
Diameter of earth (d_e) = 12.8 x 10d⁶ m
Distance between sun and eath (L) = 1.5 x 10¹¹ m
Stefan Boltzmann Constant (σ) = 5.67 x 10^-8
Take ε = 1 for black body Sun is assumed as a black body.

The radiation received by the earth's surface on a clear day with the sun overhead is 1.1 kw/m² and an additional 0.3 kw/m² is absorbed by the earth's atmosphere. Calculate approximately energy radiated by the Sun.
Given that
Diameter of sun (d_s) = 1.39 x 10⁹ m
Diameter of earth (d_e) = 12.8 x 10d⁶ m
Distance between sun and eath (L) = 1.5 x 10¹¹ m
Stefan Boltzmann Constant (σ) = 5.67 x 10^-8
Take ε = 1 for black body Sun is assumed as a black body.