40. IE •• The index of refraction of crown glass is 1.515 for red light and 1.523 for blue light.

(a) If light of both colors is incident on crown glass from air, the blue color will be refracted (1) more, (2) less, or (3) the same amount as the red color. Explain.

(b) Find the angle separating rays of the two colors in a piece of crown glass if their angle of incidence is 37°.