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Q.

Among the following what is the definition of dispersion?

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a

Separation of white light into its component colours

b

Light ray bending at a corner

c

When a light beam goes from one medium to another, it bends towards normal

d

A surface's reflection of light rays

answer is D.

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Detailed Solution

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Dispersion of light refers to the separation of a composite beam of light into its constituent hues.

White light disperses because the hues of white light move at different rates through the glass prism.

The spectrum of light is a band of seven colours.

Sir Isaac Newton discovered  Dispersion.

Newton found that light is composed of seven distinct hues.

Therefore, we can say the Separation of white light into its component colours is the right answer.


 

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