Q. 174.8( 9 Votes )

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Answer :

The colors of white light splatted by a glass prism can be recombined to get white light by another identical glass prism. It can be done by putting an identical glass prism in the inverted position and allow all the colors of the spectrum to pass through the second prism. This will led to the emerging of white light from the second prism showing that white light is composed of seven colors.

The ray diagram can be shown as follows:

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