PhysicsLAB Worksheet
Snell's Law Calculations

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Snell's Law is stated as n1 sin(θ1) = n2 sin(θ2) where
 
  • n1 is the index of refraction for the first medium
  • n2 is the index of refraction for the second medium
  • that angles θ1 and θ2 are always measured from the normal, NEVER from the interface.
 
 
Problems
 
1. Using the information given in the following diagram, calculate the optical index of refraction for medium B.
 
 

2. Using the information given in the following diagram, calculate the optical index of refraction for medium B.
 
 

3. Using the information given in the following diagram, calculate the angle of refraction in the lower medium.
 
 

4. A ray of light strikes a piece of glass (n = 1.5), making an angle of 30o with the surface. What angle does the refracted ray make with the surface inside the glass?
 
 




 
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