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2 cards from this section. Quick, good the night before a test.
What does Fermat’s Principle state?
Think about how light reaches your eye the quickest way.
Define the angle of incidence.
Picture light hitting a surface.
What principle describes the path of light traveling between two points?
Think about the quickest route.
True or False: The angle of incidence is always equal to the angle of refraction.
Think about how light bends.
Prove that a light ray traveling from air (n1=1.00) into glass (n2=1.5) with an angle of incidence of 45° produces a refracted angle using Snell's Law.
Start by calculating sin(45) and then isolate sin(r) for the next step.
If a ray of light hits a boundary between two media with refractive indices n1=2.0 and n2=1.5 at 60°, will it undergo total internal reflection?
Use the formula for critical angle \\( \\sin(θ_c) = \\frac{n2}{n1} \\).
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