Question

A white light is passed through a hollow prism then deviation or dispersion both takes place or not

Answer 1

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The answer is not

Extra information :-When white light passes through the prism ,different colours suffers deviation through different angles and light appears to be dispersed. But in a hollow prism dispersion does not take place as all the colours travel with same speed in the air inside hollow prism. Thus no angular dispersion is there.......

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Answer 2

No, when white light is passed through a hollow prism it disperse only into seven constituent colours

which are VIBGYOR ( Violet , Indigo , Blue , Green , Yellow , Orange , Red )

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