U2.2 Refraction Flashcards
(6 cards)
1
Q
What is snells law?
A
When light passes from one medium into another, the ratio of sine of the angle of incidence to the sine of the angle of refraction is a constant.
2
Q
What happens when light passes from a less dense material to a more dense material?
A
Light slows down and beds towards the normal.
3
Q
What happens when light passes from a more dense material to a less dense material?
A
Light speeds up ands bends away from the normal.
4
Q
What is the equation for snells law?
A
Sin i
———— = n
Sin r
5
Q
What is the equation for n?
A
Speed of light in medium 1 (c1)
n = ———————————————————————
Speed of light in medium 2 (c2)
6
Q
Refractive indices equation
A
1n2 = 1 / 2n1
