Refraction and Speed Ratio
A light ray travels from medium 1, where its speed is v₁, into medium 2. The angle of incidence is θ₁ = 45° relative to the normal, and the angle of refraction is θ₂ = 30°. What is the ratio of the speeds, v₁/v₂?
A
sin(30°)/sin(45°) ≈ 0.71
B
45°/30° = 1.5
C
tan(45°)/tan(30°) ≈ 1.73
D
sin(45°)/sin(30°) ≈ 1.41
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