refraction of light Flashcards
1
Q
What is the absolute refractive index?
A
how much material will refract a wave relative to a vacuum which does not refract a wave at all
2
Q
When does the refractive index of a medium increase?
A
as the frequency of light increases
3
Q
What is the definition of the critical angle?
A
the angle of incidence which produces an angle of refraction of exactly 90 degrees
4
Q
When does total internal reflection occur?
A
when the angle of incidence is greater than the critical angle
