A light ray in material 1 goes into material 2. The angle of incidence in material 1 is 40.0? and the angle of refraction in material 
and the angle of refraction in material 2 is 
If the index of refraction of material 1 is 1.60, what is the index of refraction of material 2?
A. 3.20
B. 2.00
C. 1.88
D. 1.41
E. 1.20
B. 2.00
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