Solution: A light ray enters a rectangular block of plastic
Chapter 35, Problem 77(choose chapter or problem)
A light ray enters a rectangular block of plastic at an angle u1 5 45.0 and emerges at an angle u2 5 76.0 as shown in Figure P35.77. (a) Determine the index of refraction of the plastic. (b) If the light ray enters the plastic at a point L 5 50.0 cm from the bottom edge, what time interval is required for the light ray to travel through the plastic?
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