u a x A. r v 11. The prism on the right is made of glass with a refractive index of 1.60 for blue light and 1.54 for red light. Assume n=1.00 for air. a) At what angle are blue and red light refracted when entering the prism? b) Calculate the angles of deviation BB and SR, corresponding to the angles the blue and red light rays leaving the prism make with the normal. c) If you place a screen 50 cm to the right of the prism to observe a rainbow, how wide will it be? (Hint: calculate the distance between the blue and red ray using simple trigonometry.)