When white light is incident on a thin-walled hollow glass prism, the colour of the emergent light will be:

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Red

Green

Yellow

White

answer is D.

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Detailed Solution

When white light is incident on a thin-walled hollow glass prism, the colour of the emergent light will be white.
When white light is incident on a thin-walled hollow glass prism, the colour of the emergent light will be white, but the bending of all colours is away from the base. As a result, the light emerging from the prism gives a spectrum. This happens because when the white light travels from air into the hollow prism, there is no medium change, as the prism has air inside.

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