Illumination of the sun at noon is maximum because :

Question

Illumination of the sun at noon is maximum because : (A) scattering is reduced at noon (B) refraction of light is minimum at noon (C) rays are incident almost normally (D) the sun is nearer to earth at noon

Tardigrade Admin · Accepted Answer

The intensity of illumination is given by I=(P cos θ /r2) .....(i) where P = power of the source r = distance between source and point θ = angle of incidence when θ =0, I will be maximum. Hence the rays from the sun .are incident normally on the earth surface.

Q. Illumination of the sun at noon is maximum because :

scattering is reduced at noon

refraction of light is minimum at noon

rays are incident almost normally

the sun is nearer to earth at noon

The intensity of illumination is given by $I = \frac{P c o s θ}{r ^{2}}$ .....(i) where P = power of the source r = distance between source and point $θ$ = angle of incidence when $θ = 0,$ I will be maximum. Hence the rays from the sun .are incident normally on the earth surface.

Q. Illumination of the sun at noon is maximum because :

scattering is reduced at noon

refraction of light is minimum at noon

rays are incident almost normally

the sun is nearer to earth at noon

The intensity of illumination is given by I=r2Pcosθ​ .....(i) where P = power of the source r = distance between source and point θ = angle of incidence when θ=0, I will be maximum. Hence the rays from the sun .are incident normally on the earth surface.

The intensity of illumination is given by $I = \frac{P c o s θ}{r ^{2}}$ .....(i) where P = power of the source r = distance between source and point $θ$ = angle of incidence when $θ = 0,$ I will be maximum. Hence the rays from the sun .are incident normally on the earth surface.