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An aquarium filled with water (n = 1.33) has flat glass sides whose index of refraction...

An aquarium filled with water (n = 1.33) has flat glass sides whose index of refraction is 1.51. A beam of light from outside the aquarium strikes the glass at a 43.5∘ angle to the perpendicular (Figure 1).

Part A What is the angle of this light ray when it enters the glass? Express your answer using three significant figures. θ2 =  

Part B What is the angle of this light ray when it enters the water? Express your answer using three significant figures. θ3 = ∘

Part C What would be the refracted angle if the ray entered the water directly? Express your answer using three significant figures. θ4 = ∘

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