Light travels from diamond into water with an angle of refraction (θr) of 47.2 °. What is the angle of incidence (θi) if the refractive index of diamond is 2.4 and the refractive index of water is 1.33.
The angle of incidence is: ° (Give your answer to the nearest 10th of a degree)
I worked it out on paint so that i can write it myself.
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