Write and solve question no. 5 please
This phenomenon is called scattering of light.
When sunlight reaches an atmospheric particle in the sky, blue light is scattered away more strongly than other colours, giving the impression that the sky is blue. But in a cloud, sunlight is scattered by much larger water droplets. These scatter all colours almost equally meaning that the sunlight continues to remain white and so making the clouds appear white against the background of the blue sky.
When light passes from one medium to another, then a part of the light is absorbed by of the medium, preceded by its subsequent radiation in a particular direction. This phenomenon is termed a scattering of light.
The intensity of scattered light depends on the size of the particles and the wavelength of the light.When sunlight reaches an atmospheric particle in the sky, blue light is scattered away more strongly than other colours, giving the impression that the sky is blue. But in a cloud, sunlight is scattered by much larger water droplets. These scatter all colours almost equally meaning that the sunlight continues to remain white and so making the clouds appear white against the background of the blue sky.