A light beam in air strikes the surface of water at an angle of 26° with the normal. When it enters the water it bends toward the normal, making an angle of 19° with it. The velocity of light in air is approximately 300,000 km/s. What is the approximate velocity of light in water?
sin i / sin r = Vi/Vr
A. 77,197 km/s
B. 222,803 km/s
C. 278,437 km/s
D. 340,625 km/s
Medium 1 is air, and its index of refraction rounds to 1.00. If the angle of incidence is 61° and the angle of refraction is 45°, what is the index of refraction of medium 2?
sin i/sin r = nr/ni
A. 0.89
B. 1.00
C. 1.24
D. 1.35
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