Posted by **ashley --** on Saturday, April 30, 2011 at 6:27pm.

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

Choose one answer.

a. 32.04o

b. 45.00o

c. 59.99o

d. 33.76o

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