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Homework Help: HELP EMR wavelength question!

  1. Dec 20, 2012 #1
    1. The problem statement, all variables and given/known data

    To confirm the wavelength of a new laser, a scientist prepares a diffraction grating with a distance of 5.00 x 10^-6 m between slits and places it in front of the laser which is 1.50 m in front of a screen. The scientist measures the distance from the central maxima to the second bright fringe, which is 0.33 m. What is the wavelength of the laser?

    d = 5.00 x 10^-6 m
    L = 1.50 m
    n = 2
    x = 0.33m

    2. Relevant equations

    λ= xd/nL

    λ= sinθ(d)/n

    3. The attempt at a solution

    λ = xd/nL

    = (0.33m)(5.00 x 10^-6m) / (2)(1.50)
    = 5.5 x 10^-7 m
  2. jcsd
  3. Dec 20, 2012 #2


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    2017 Award

    Staff: Mentor

    Looks fine. Where is your question/problem?
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