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## Homework Statement

light is incident on an equilateral triangular prism (n=1.55) at a 35 degree angle from the normal to one of the faces. What is the exit angle?

## Homework Equations

## The Attempt at a Solution

45 degree

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- Thread starter tuanle007
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- #1

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light is incident on an equilateral triangular prism (n=1.55) at a 35 degree angle from the normal to one of the faces. What is the exit angle?

45 degree

Last edited:

- #2

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You haven't shown any of your work, so lets break this down and go from the beginning - you should know that the beam of light bends as it passes through the first surface of the prism - you should know of a law that describes how much bending occurs. Then what happens to the beam of light?

- #3

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For further reference, look here:

http://en.wikipedia.org/wiki/Snell's_law

- #4

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i really don't know where to start with this problem.

i am really lost in this class and i have a midterm next wednesday.

- #5

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so using snell's law will help me find the exit angle?

- #6

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i got i = 73.8 degree

?

?

- #7

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- #8

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Yes, it's the only law you'll need to solve this.so using snell's law will help me find the exit angle?

How?i got i = 73.8 degree?

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