A Light Ray in Glass Arrives at the Glass-Water Interface $\theta = 48 ^ { \circ }$

A light ray in glass arrives at the glass-water interface at an angle of $\theta = 48 ^ { \circ }$ with the normal. The refracted ray in water makes an angle $\theta = 61 ^ { \circ }$ 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 $\theta = 25 ^ { \circ }$ . What is the new angle of refraction $\phi$ in the water?

A) $62 ^ { \circ }$
B) $30 ^ { \circ }$
C) $60 ^ { \circ }$
D) $56 ^ { \circ }$
E) $54 ^ { \circ }$

Correct Answer:

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