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A light ray initially in water enters a transparent substance at an angle of incidence of 39.0°, and the transmitted ray is refracted at an angle of 31.0°. Calculate the speed of light in the transparent substance.
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Added Tue, 04 Aug '15
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from the snells law
n1sin i = n2 sinr
1.33 sin39 = n2 sin 31
n2 = 1.677
speed of light in that substance v = c/n2 = 3x10^8/1.677 = 1.788x10^8 m/s
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Added Tue, 04 Aug '15
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