College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 31

As shown in Figure P22.49, a light ray is incident normal to one face of a 30° 60° 90° block of flint glass (a prism) that is immersed in water. (a) Determine the exit angle 3 of the ray. (b) A substance is dissolved in the water to increase the index of refraction n 2. At what value of n 2 does total internal reflection cease at point P