η1 = ηglass = 1.39
η2 = ηair = 1
Red light is incident in air on a 30- 60- 90(degree) prism as shown. The incident beam is directed at an angle of ϕ1 = 41.3° and ϕ2 = 46.6° with respect to the horizontal and enters the prism at a height h = 17 cm above the base. The beam leaves the prism to the air at a distance d = 45.5 along the base as shown. The refractive index of the glass is 1.39.
What is ϕ3, the angle the transmitted beam makes with the horizontal axis?
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