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## 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}=n

_{2}/n

_{1}

sinθ

_{c}=n

_{1}/n

_{2}

(n

_{2}is greater than n

_{1})

## The Attempt at a Solution

n

_{1}=1.000

tan63=n

_{2}/1.000

n

_{2}=1.963

sinθ

_{c}=(1.000/1.963)

**θ**

_{c}=31°