GKFix MCQ Question

In Snell's Law, n₁sin(θ₁) = n₂sin(θ₂), what do n₁ and n₂ represent?

• A. The angles of incidence and refraction, respectively
• B. The speeds of light in the first and second medium, respectively
• C. The refractive indices of the first and second medium, respectively
• D. The thicknesses of the first and second medium, respectively