- #1

rayhan619

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## Homework Statement

The glass core of an optical fiber has an index of refraction 1.62. The index of refraction of the cladding is 1.47.

What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?

## Homework Equations

theta = sin ^-1 (n2/n1)

## The Attempt at a Solution

i used the equation and got angel 65.15 which was wrong