The Index of Refraction for a Certain Material Is $1.399$ For Red Light And

The index of refraction for a certain material is $1.399$ for red light and $1.432$ for blue light. Light containing both of these colors is traveling in vacuum and strikes a flat sheet of this material. Find the angle separating the two colors in the refracted light in the sheet if the angle of incidence is $60.00 ^ { \circ }$ .