A crown-glass prism of apex angle produces the following measured refractive indices…
PHYSICS · Multi-part · CBSE · Physics · The Human Eye and the Colourful World · The Human Eye and the Colourful World
Problem
A crown-glass prism of apex angle 5.0∘ produces the following measured refractive indices for two extreme colours: μr=1.58 for red light and μv=1.64 for violet light. The refractive index for the mean (yellow-green) colour is 1.60.
(i) Calculate the angular deviation suffered by the mean ray.
(ii) Obtain the angular separation between the violet and red rays emerging from the prism.
(iii) Compute the dispersive power of the crown-glass material.