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Homework Help: Problem about light refraction, critical angle ?

  1. Sep 19, 2012 #1
    i want to delete the post ..
    Last edited: Sep 19, 2012
  2. jcsd
  3. Sep 20, 2012 #2

    Simon Bridge

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    Homework Helper

    You solved the problem without our help? Well done: if you share your solution then someone else with the same or similar problem will benefit from your moment of confusion ;)
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