- #1

- 61

- 0

## Homework Statement

Light is incident along the normal to face AB of a glass prism of refractive index 1.47

Find the alpha max, the largest value of the angle alpha such that no light is refracted out of the prism at face AC if the prism is immersed in air.

## Homework Equations

n1*sin thetha1 = n2 * sin thetha2

## The Attempt at a Solution

since no light is refracted out of the prism, then total internal reflection is involved.

sin critical alpha = (n2/n1)*sin 90

= 1.33/147

alpha = 64.8

but I got it wrong,

please someone help me..

thanks..

#### Attachments

Last edited: