Question

How particles scatter light in collidation

Answer 1

what you meant by collidation in question is it colloid

The Tyndall effect, also known as Willis–Tyndall scattering, is light scattering by particles in a colloid or else particles in a very fine suspension. ... Under the Tyndall effect, the longer-wavelength light is more transmitted while the shorter-wavelength light is more reflected via scattering

large particles block light ray and changes direction this is reason of scattering