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3 cards from this section. Quick, good the night before a test.
What is the Incident Ray?
Think about the ray's initial path before it meets the surface.
Define the term 'Normal'.
Imagine standing straight up next to a wall.
What is the term for the ray of light that strikes the surface?
It’s the ray ‘incident’ upon the surface.
True or False: The Angle of Refraction is measured between the refracted ray and the normal.
Think where the refracted ray goes after bending.
Given that the angle of incidence is 45 degrees and the angle of refraction is 30 degrees, calculate the refractive index of the second medium. Show your working.
Use the relationship of angles and sine values.
If light travels from air (n=1.00) into water (n=1.33) at an angle of incidence of 60 degrees, what is the angle of refraction?
Remember to rearrange Snell's Law according to the formula.
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