A Light Ray in Glass Arrives at the Glass-Water Interface

A light ray in glass arrives at the glass-water interface an an angle of θ = 48° with the normal.The refracted ray in water makes an angle φ = 72° angle with the normal,as shown in the figure.The index of refraction of water is 1.33.The angle of incidence is now changed to θ = 37°.What is the new angle of refraction φ in the water?

A) 50°
B) 48°
C) 46°
D) 52°
E) 54°

Correct Answer:

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