The energy flux of sunlight reaching the surface of the earth

cbse
dual-nature

#1

The energy flux of sunlight reaching the surface of the earth. How many photons (nearly) per square metre are incident on the earth per second? Assume that the photons in the sunlight have an average wavelength of 550 nm.


#2

Energy of a photon, E = hc/λ
Number of photons incident per square metre per second,