Scattering of Light

At the noon the sun appears white as

At sunset the sky near the sun looks red due to

The redness in atmosphere during sunrise is due to

What phenomenon of light causes the blue colour of the sky and the reddening of the sun at sunrise or sunset?

The sky will appear red instead of blue if:

A) atmospheric particles scatter blue light more than red light. 

B) atmospheric particles scatter all colours equally. 

C) the sun was much hotter.

D) atmospheric particles scatter red light more than blue light.

One cannot see-through fog, because.

Sir C.V. Raman received the Nobel Prize for his work concerned with which of the following phenomenon of radiation?

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light

Why clouds appear white?

Why do clouds appear white while sky appears blue?

The complementary colour of red is yellow.

Which is the complementary colour of blue colour?

Complementary colours are 
 

Which of the following is complementary colours?
 

What are complementary colours of light?

Rayleigh scattering and Mie scattering are the types of ________?

The sky appears black when seen from the moon (or outer space) because _____ of light is not prominent at such height due to the absence of particles.

Consider the following statement and choose the incorrect one (s).
I. The blue colour of clear sky is due to the presence of atmosphere on the earth.
II. The greyish appearance of sky is due to the presence of smoke and dust particles in the atmosphere.
III. Emergency signals and danger signals are red because red light can travel long distance without being scattered.
IV. When electromagnetic waves strike a matter, then scattering takes place,

Violet has the smallest wavelength, but colour of sky is blue. Why?

Sky appears black in the absence of atmosphere.