Write the condition required for scattering …

When light passes from one medium to any other medium say air, glass or water then a part of the light is absorbed by particles of the medium preceded by its subsequent radiation in a particular direction. This phenomenon is termed as Scattering of light.
The bending of multicolored light can be seen in the afternoon due to the refraction and total internal reflection of light. The wavelength of the sunlight forms different colors at different direction. Rayleigh scattering theory is reasoned for the red color of the sun in the morning and blue color of the sky.
When light meets a molecule smaller than its wavelength, the electric fields temporarily polarise the molecule, re-distributing the electrons in the molecule such that one end has a weak positive charge, and the other has a weak negative charge. This separation of charges is called a dipole moment. As the oscillating electric fields interact with the molecule, the molecule’s dipole moment oscillates and the molecule re-radiates the light in all directions.