Chapt. 35Geometrical Optics267035 qmult 01130 1 3 5 easy math: Snell’s law calculation21. The index of refraction of air is 1.000293 (at 0◦and 1 atm) and that of water is 1.333 (at 20◦).The dependency on temperature and pressure are relatively weak. If a light ray in air is incidenton water with incident angle 60◦, what is the angle of the refracted ray according to Snell’s lawand the small-angle approximation to Snell’s law?a) 22.0◦; 22.5◦.b) 22.0◦; 22.0◦.c) 28.8◦; 30.0◦.d) 45.0◦; 45.0◦.e) 40.5◦; 45.0◦.035 qmult 01140 1 4 5 easy deducto-memory: small-angle apparent depth formula22. “Let’s playJeopardy! For $100, the answer is:dapparentd=n1n2,wheren1is the index of refraction in the medium in which the ray is observed andn2is theindex of refraction of the medium in which the ray originates.What is the, Alex?
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Angle of Incidence, Alex, Total internal reflection, Geometrical optics