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Homework Help: Light - 2 slits

  1. Sep 25, 2008 #1
    1. The problem statement, all variables and given/known data

    Two narrow slits are 0.12 mm apart. Light of wavelength 550 nm illuminates the slits, causing an interference pattern on a screen 1.0 m away. Light from each slit travels to the m= 1 maximum on the right side of the central maximum.

    Part A -
    How much farther did the light from the left slit travel than the light from the right slit?
    2. Relevant equations

    ym = (m*lambda*L)/d
    thetam=lambda/d
    r=d*sin(theta)

    3. The attempt at a solution

    So...
    L=1*10^9nm
    d=1.2*10^6nm
    lambda=550nm
    m=1

    I have tried a few different things, but I have no idea as to correctly proceed. I have been sticking those numbers into the equations above, but I am not getting any good answers. I must be missing something obvious...
     
  2. jcsd
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