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Homework Help: Focus an axial ray

  1. Feb 13, 2006 #1
    is it possible to focus an axial ray through a double plano piece of glass placed in air?

    i dont think so because the glass will not reflect the ray towards the optical axis for the ray to focus in. is this thinking correct?
     
  2. jcsd
  3. Feb 13, 2006 #2

    Astronuc

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    What is the requirement for refraction?
     
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