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Question

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

A
Reflection, refraction and dispersion
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B
Refraction, dispersion and total internal reflection
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C
Refraction, dispersion and internal reflection
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D
None of the above
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Solution

The correct option is C Refraction, dispersion and internal reflection
When white sunlight passes through the water droplets, it splits into its constituent colours (known as dispersion). After that, these colours undergo partial internal reflection and emerge out of the opposite side of the drop by undergoing refraction.


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