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Homework Help: Fresnel biprism

  1. Jul 2, 2006 #1
    # A Fresnel biprism arrangement used to study interference in air is immersed completely in a liquid. Will the fringe width increase, decrease or remain unchanged?
  2. jcsd
  3. Jul 5, 2006 #2

    Tom Mattson

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    Let's see what you've got so far, then you can get help on it.
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