What is the name of the relation n₁ sin θ₁ = n₂ sin θ₂ across a refracting boundary?

A) Focal point

B) Snell's law

C) Convex mirror

D) Specular reflection

Answer: B

Explanation: Snell's law refers to the relation n₁ sin θ₁ = n₂ sin θ₂ across a refracting boundary. It predicts changes in ray direction.

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