33. Geometric Optics
Refraction of Light & Snell's Law
Multiple Choice
Multiple ChoiceA light ray, moving in air, is incident on a piece of plastic at an angle of 23° with respect to the normal. Inside the plastic the ray travels at an angle of 16° with respect to the normal. What is the index of refraction of the plastic?
A
1.5
B
1.6
C
1.7
D
1.8
E
1.4
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