Question

What's the reason behind this formation?

please explain it in a simple way...!​

Answer 1

Answer:

it is a optical phenomenon that belongs to the family of ice crystals halos. it's form a ring with an apparent radius of approximately 22 degree around the sun or moon

Answer 2

Answer:

the rainbow is an Arc of seven colours seen in the sky. the seven colour Rainbow is formed in the sky just after rain when the sun is shining.

Just after rain, there are a large number of small water drops suspended in the atmosphere each of these water drop act type a small prism. as the white sunlight enter and leaves these water drops the various colour rays of Sunlight are created by different amount and a long arc of seven colour called Rainbow is formed in the sky.