Expain why white light is dispersed when passing through a prism.

Which colour deviates least on passing through prism ?

Explain how a ray of light passing through a prism is deviated towards the base of the prism.

Plot a graph to show the variation of the angle of deviation as a function of angle of incidence for light rays passing through a prism.

Which colour deviates most on passing through prism?

General instruction same as in chapter 1. Assertion:If we look through a muslin cloth, a coloured spectrum is seen. It is due to diffraction of white light on passing through fine slits.

Violet colour is seen at te bottom of the spectrum,when white light is dispersed by a prism.Why?

A beam of white ligth passing through a hollow prism gives no spectrum.Explain.

Explain what is observed when abeam of light is passed through colloidal solution of arsenious sulphide? Give the name of the phenomenon also.