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Homework Help: Interference/diffraction pattern formed by 2 slits

  1. Jul 25, 2012 #1
    1. The problem statement, all variables and given/known data

    interference/diffraction pattern formed by two slits for light with λ=600nm on a wall L=2.0m from the slits. find a (width) and d (separtation of slits.

    2. Relevant equations

    looking at the figure given d/a=5

    3. The attempt at a solution

    so dsin(theta)=5(lambda) and asin(theta)=1λ
    also looking at the figure the dark spot appears .0045m from the center point.
    How do I solve for theta?
    Last edited: Jul 25, 2012
  2. jcsd
  3. Jul 27, 2012 #2


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    Homework Helper

    Unfortunately we don't have the luxury of being able to "look at the figure given".
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