For this problem, refer to figure. For various angles of incidence, it can be shown that the deviation angle δ is a minimum when the ray passes through the glass so that the interior ray is parallel to the base of the prism. A measurement of this minimum angle of deviation enables one to find the index of refraction of the prism material. Show that n is given by the expression where A is the apex angle of theprism.

Transcribed Image Text:

(A + 8min) sin A sin