- #1

mogley76

- 19

- 0

## Homework Statement

a ray of light traveling through glass is incident at the interface with air at an angle of 30 deg to the normal. if the ray is refracted at the critical angle, what is the refractive index of the glass?

## Homework Equations

none

## The Attempt at a Solution

sin (90)= n2/n1 therefore n = 1 is that right?