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2 cards from this section. Quick, good the night before a test.
What happens to light when it passes from a denser medium to a rarer medium?
Think about how light behaves at the interface.
Define critical angle.
Consider the scenario where no refracted light is seen.
What direction does light bend when it travels from a denser to a rarer medium?
Remember the behavior observed in prisms.
Is the critical angle dependent on the wavelength of light?
Focus on the relationship between media.
A light ray in water strikes the water-air boundary with an angle of incidence of 30°. Calculate the angle of refraction.
Set up the relationship with Snell's law.
If the critical angle for glass to air is approximately 42°, what can be inferred about the refractive index of glass?
Relate the critical angle's sine to the refractive indices.
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