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# A light ray is travelling .The refractive index of XandY are 1and1.24.If the angle of incidence is 14°, find the angle of refraction (in °).?

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- MangalLv 43 months agoFavorite Answer
(sin i) / (sin r) = (RI of Y) / (RI of X) = 1.24 / 1 = 1.24

sin r = (sin i) / 1.24 = (sin 14°) / 1.24 = 0.244 / 1.24 = 0.197

r = arcsin 0.107 = 11.36° (ans)

- LônLv 73 months ago
Ref index = sin i / sin r

sin r = sin 14/ 1.24

sin r = 0.1951

r = 11.25 degrees.

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