Which of the following phenomena of light are involved in the formation of a rainbow?

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Reflection, refraction and dispersion

Refraction, dispersion and outer reflection

Refraction, dispersion and internal reflection

Dispersion, scattering and total internal reflection

answer is C.

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Detailed Solution

Refraction, dispersion and internal reflection are the phenomena of light involved in forming a rainbow.
A rainbow is the phenomenon of dispersion, refraction, and internal reflection of sunlight by tiny water droplets. Because A rainbow is a natural spectrum after a shower of rain (every water droplet acts as a small prism) formed due to the dispersion, refraction, and internal reflection of different colours. It can be understood by the process shown in the following diagram:
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