Coherence light

  • Thread starter tuanle007
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  • #1
tuanle007
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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
 
Last edited:

Answers and Replies

  • #2
sx70
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This isn't a coherence question (or advanced physics) but here goes -
You haven't shown any of your work, so let's 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
astrorob
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  • #4
tuanle007
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thanks for everyone's help.
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
tuanle007
36
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so using snell's law will help me find the exit angle?
 
  • #6
tuanle007
36
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i got i = 73.8 degree
?
 
  • #7
sx70
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73.8 degrees? Not yet. I was only looking for the angle inside the prism, then we were going to go thru and refract again at the second surface. You really need to show your work so I know what you're thinking - that's the way you get partial credit.
 
  • #8
astrorob
140
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so using snell's law will help me find the exit angle?

Yes, it's the only law you'll need to solve this.

i got i = 73.8 degree?

How?
 

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