PRACTICE QUIZ: Refraction
1. For the red incidence ray, continue to draw the ray as it enters the air (in red). Draw the normal
as a dotted line, if necessary.
a)
Does the ray bend towards or away from the normal?
b)
Is the angle of refraction larger or smaller than the angle of incidence? Why?
c)
Is the angle of reflection larger or smaller than the angle of incidence? Why?
2. For the yellow incidence ray, continue to draw the ray as it enters the air (in yellow). Draw the
normal as a dotted line, if necessary. Describe the ray as it enters the air.
3. Using a different color, draw rays to show total internal reflection. Label the appropriate angles
by dragging (or drawing) the symbols on shown the right (not all angles will be used).
θr
θi
90°
θR