# Physics

posted by Derp

What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45 degrees to the normal? The refractive index of water is 1.333.

32.04

45.00

59.99

33.76

I was thinking A or D

1. Elena

32.04
r=sin⁻¹(sini/n)

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