A ray of light in air (n = 1.00) enters water (n = 1.33) at 60° from the normal. What is the angle of refraction? (sin 60° ≈ 0.866)
Explanation
📌 Snell: (1.00)(sin 60°) = (1.33)(sin θ). sin θ = 0.866/1.33 = 0.651. θ = 40.6°. Distractor A: guess; C: reversed (larger); D: too small.