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What color will the oil appear and calculate the wavelenght

  1. Jan 8, 2006 #1
    An oil slick 122 nm thick (n = 1.4), lying on water, is illuminated by white ligiht incident, perpendicular to its surface. What color will the oil appear and calculate the wavelenght.
     
  2. jcsd
  3. Jan 8, 2006 #2
    show some work!
     
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