Refraction 4

There is a formula that relates the index of refraction for 2 materials. It is called Snell's law.

n₁sin(A) = n₂sin(B)

The black line is called the normal. That means it is at a right angle to the surface.

A is the angle of incidence. It is the angle between the normal and the incident ray.

B is the angle of refraction. It is the angle between the refracted ray and the normal.

We will use Snell's law to find n₂,the index of refraction for water.

Solve Snell's law for n₂.

a) n₂ = n₁ sin(A)sin(B)

b) n₂ = n₁ sin(AB)

c) n₂ = n₁ × ^sin(B)/_sin(A)

d) n₂ = n₁ × ^sin(A)/_sin(B)