Finding the Critical Angle for T.I.R.

[aChordate]

Homework Statement

When light strikes an air-material interface from the air side, Brewster’s angle is 63°.
What is the critical angle for total internal reflection for light striking the interface from
the material side?

Homework Equations

tanθ_B=n₂/n₁

sinθ_c=n₁/n₂
(n₂ is greater than n₁)

The Attempt at a Solution

n₁=1.000

tan63=n₂/1.000

n₂=1.963

sinθ_c=(1.000/1.963)

θ_c=31°

 

[ehild]

It is correct.

ehild