Question

A beam of light passes from water through a thin layer of oil and into air, as shown in the image below. Only the beam in the water is shown in the figure. If the angle at which the beam is refracted in the air from the oil is 25° (the picture is not to scale), at what angles was the light beam incident on the air from the oil and incident on the oil from the water? Show your work and explain your reasoning. The index of refraction of water is 1.33 and the index of refraction of oil is 1.50. (30 points) Draw a picture showing the path of the beam with all angles labeled. (15 pts)

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256 1.33 Snells Lew at Air-oil interface 1x sin 250 - 1.56ino, sino, 15 5 0,-16:36° Snells hape at Water oil interface 1- 3

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