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Questions
The phenomena of light involved in the formation of rainbow are ______.
Which of the following phenomena of light are involved in the formation of a rainbow?
Options
Reflection, refraction and dispersion
Refraction, dispersion and total internal reflection
Refraction, dispersion and internal reflection
Dispersion, scattering and total internal reflection
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Solution
Refraction, dispersion and internal reflection
Explanation -
A rainbow is a natural spectrum of seven colours appearing in the sky after a rain shower. It is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere. The water droplets act like small prisms. They refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrop.
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