Light passes from air (n=1) into glass (n=1.5) at an incidence angle o…

Question

Light passes from air (n=1) into glass (n=1.5) at an incidence angle of 60°. Using Snell's law, the angle of refraction is

Accepted Answer

A. sin⁻¹(√3 / 3)

1. Snell: n₁ sin θ₁ = n₂ sin θ₂ ⇒ 1 × sin 60° = 1.5 × sin θ₂.
2. sin θ₂ = (√3/2) / 1.5 = √3/3.
3. θ₂ = sin⁻¹(√3/3) ≈ 33.6°.
_Source: syllabus Physics Part II, Ch 9 §9.3_

Answer

sin⁻¹(√3 / 2)

Answer

sin⁻¹(2/3)

Answer

30°

Light passes from air (n=1) into glass (n=1.5) at an incidence angle of 60°. Using Snell's law, the angle of refraction is

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