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Dispersion of Light

When white li...

Question

When white light passes through a glass prism, we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is

A

The violet ray

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B

The red ray

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C

The green ray

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D

The yellow ray

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Solution

The correct option is B The red ray
Greater the wavelength smaller the deviation. Since the wavelength of red light is maximum, it will suffer least deviation.

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