Three thin prisms are combined as shown in figure. The refractive indices of the crown glass for red, yellow and violet rays are μr, μy and μv respectively and those for the flint glass are μ′r, μ′y and μ′v respectively. Find A′A for which, there is no net deviation in the yellow light.
|Why this question ?
Note: If the second prism in the question is also made up of the crown glass instead of flint glass and if A=A′, then the combination of three prisms will behave as a single prism.