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3. Light travels through a substance at 1.97 x 10 m/s. What is the index of the liquid? What type of liquid is it?
5. If the angle of incidence of light traveling through air, striking water, is 30 degrees, what is the angle of refraction?
8. A light ray moving through CR39 at an angle of 49 degrees exits into another medium at an angle of 27.48 degrees. What is
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Answer #1

N = C 슦 { formula 3 n = refrective inder of material с 1.52 = 3x108 1.97 x 108 Crown glasses n = 1cair) 8,= M₂ = 1.33 (water)

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