Question

1. A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
2. If white light is used in the same way as in part (a) above, what change do you expect in the emergent beam?
3. What conclusion do you draw about the nature of white light in part (b)?

Answer 1

1. The beam of light pass parallel to the base.
2. White light splits into its constituent colours i.e., spectrum is formed.
3. White light is Polychromatic.