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Max angle of incidence help!

  • Thread starter BuBbLeS01
  • Start date
602
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[SOLVED] Max angle of incidence...help!

1. Homework Statement
A 1-cm-thick layer of water stands on a horizontal slab of glass. Light from a source within the glass is incident on the glass-water boundary. What is the maximum angle of incidence for which the light ray can emerge into the air above the water? (Give your answer in degrees.)


2. Homework Equations



3. The Attempt at a Solution

Isn't this just theta = sin^-1 * (1.33/1.5) = 62.46 degrees but thats not right. And I probably need to do something with the 1 cm thick layer of water but I don't know what?
 

Answers and Replies

Kurdt
Staff Emeritus
Science Advisor
Gold Member
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There are two interfaces. The glass-water interface and the water-air interface.
 
Last edited:
602
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oh wait yea I got it thanks!!!
 

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