For a given figure, which of the following equation best describes the Snell's law?

Correct option is B

The correct answer is: (b) n₁sinθ₁ = n₂sinθ₂ Explanation: According to Snell's Law, the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities (or inversely, the refractive indices) in the two media. This governs how a light ray bends when passing from one medium to another.
Information Booster:
· Snell’s Law: n₁sinθ₁ = n₂sinθ₂
· Used in lenses, optical instruments, and understanding total internal reflection.
· If n₂ > n₁, the ray bends toward the normal (slower medium).
· If n₂ < n₁, the ray bends away from the normal (faster medium).
· This principle is foundational in fiber optics and lens design.