Question 6 • Physics
Use Snell’s law: n₁ sin θ₁ = n₂ sin θ₂. With air as the first medium, sin θ₂ = (1.0003/1.33) sin 30° ≈ 0.376, so θ₂ ≈ sin⁻¹(0.376) ≈ 22°. The angle of refraction is therefore 22 degrees, choice D.
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