As shown in Figure P35.73, a light ray is incident normal
Chapter 35, Problem 73(choose chapter or problem)
As shown in Figure P35.73, a light ray is incident normal to one face of a 306090 block of flint glass (a prism) that is immersed in water. (a) Determine the exit angle u3 of the ray. (b) A substance is dissolved in the water to increase the index of refraction n2. At what value of n2 does total internal reflection cease at point P ?
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