Q19 of 30 Page 88

How will you use two identical prisms so that a narrow beam of white light incident on one prism emerges out of the second prism as white light? Draw the diagram.

We know that, when light falls on a prism, then the light gets split into its seven colors in form of ROYGBIV. When two the same prism is kept with an identical prism, but in inverted form, then the light emerging out from first prism will merge together as result in white light. The ray diagram showing it is as follows:



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