Describe an activity to show that the colours of white light splitted by a glass prism can be recombined to get white light by another identical glass-prism. Also draw ray diagram to show the recombination of the spectrum of white light.

Describe an activity to show that the colours of white light splitted

1.	Describe an activity to show that the colours of white light splitted by a glass prism can be recombined to get white light by another identical glass-prism. Also draw ray diagram to show the recombination of the spectrum of white light.
Answer» Solution :Description of activity : When a glass prism is used to OBTAIN a spectrum of sunlight, a second identical prism in an inverted position with respect to the first position will allow all the colours of spectrum to recombine. Thus a BEAM of WHITE LIGHT will EMERGE from the other side of the second prism.