Question

why sun is radish in evening time plss answer

Answer 1

refraction of light coming from the sun by dust particles present in the atmosphere. white light 7 components se milkar banti hai, refraction ke time yellow, red and orange ke alaawa saare components reflect back kar jaate hain in space.

Answer 2

According to Rayleigh''s law, the intensity of scattered light varies inversely as the fourth power of its wavelength. Sunlight consists of seven colours. Of these, red has the maximum wavelength. During sunrise and sunset, the rays have to travel a larger part of the atmosphere because they are very close to the horizon.
Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun and the sky appear red.— Chandreyee Datta, Kolkata