Question

Correct sequence of rainbow formation in refraction,tir, and dispersion

Answer 1

Following is a sequential order in which a rainbow is formed:

1. The light coming from the sun strikes the rain particles. The white light from the sun has to hit the rain particles or drops at a certain angle for the colors of the rainbow to appear.
2. Some of the light from the Sun is reflected. As the light from the Sun strikes the water drops, some of the light is reflected under the Law of Reflection.
3. The rest of the light is refracted. As the water is denser than air, so the reduction of this speed causes the other light to be bend, known as refraction.
4. White light splitting into the colors. This happens by the phenomenon dispersion when the wavelengths travelling at variant speeds encounter a change in medium according to the density, effecting the speed.
5. Light is reflected. At the back of the rain drop, the angle of incidence will be greater than the critical angle called Total Reflection.
6. Light is refracted again. As the light the leaves the rain drop it is refracted again as it is moving from a denser medium, that is water, to much less denser medium, the air.
7. Dispersion of colors. Rays after being refracted again, are further dispersed causing the formation of colors.

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Answer 2

Explanation:

Refraction- dispersion- internal refraction - refraction.

THIS IS HOW THE RAINBOW FROMATION TAKES PLACE