Scattering of white light

When sunlight is scattered by atmospheric atoms and molecules, the amount of scattering of light of wavelength 440 nm is A. The amount of scattering for the light of wavelength 660 nm is approximately

If the ratio of amounts of scattering of two light waves is 1:4, the ratio of their wavelength is

Assertion (A): Scattering of light is the reflection of light from an object in all directions. Reason (R): The colour of scattered light depends on the size of scattering particles and wavelength of light.

Scattering of light by colloidal particles is known as

Assertion : The blue colour of sky is on account of scattering of sun light. Reason : The intensity of scattered light varies inversely as the & fourth power of wavelength of the light.

Scattering of light by milk is called electrophoretic effect . Is the statement correct ?