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Homework Help: Submerged Light, Refraction Snells law maybe?

  1. Nov 10, 2012 #1
    1. The problem statement, all variables and given/known data

    A green light is submerged 2.70 m beneath the surface of a liquid with an index of refraction 1.39. What is the radius of the circle from which light escapes from the liquid into the air above the surface?

    2. Relevant equations
    Honestly I didn't even know where to start with this one.... any guidance on what to do ?


    3. The attempt at a solution
  2. jcsd
  3. Nov 10, 2012 #2


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    You correctly mention Snell's law in the title. Do you understand how it leads to total internal reflection?
  4. Nov 10, 2012 #3
    Just did some more research and i figured it out.. thank you!
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