Question

From incident White light how will you obtain White emergent light by marking use of two prisms?

Answer 1

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Put a glass prism and allow light ray to pass through it, then put another identical prism in an inverted position with respect to first prism.This allow all the colours of the spectrum produced by the first prism to pass through second prism.We can found a beam of white light emerging from the other side of the second.

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