Simple Law of Refraction Problem

  • #1

Homework Statement


I am studying the Law of Refraction. I am at a point in my textbook called a "checkpoint". These are supposed to be simple questions to test understanding. I'm apparently not understanding thus far because I cannot figure out this problem.

http://img262.imageshack.us/img262/7029/refractionqn3.jpg [Broken]

Homework Equations


Snell's Law?

The Attempt at a Solution


I'm sure the angles of line segments b and c (relative to a?) will be the determining factor. Since the problem says "original materials a" does that mean we measure all angles relative to line segment a? How do I proceed more mathematically on this problem - perhaps using Snell's law?
 
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Answers and Replies

  • #2
Doc Al
Mentor
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Definitely use Snell's law. Measure angles with respect to the normal, as usual with Snell's law.
 

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