Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Width of slit and distance between adjacent maxima

  1. Aug 10, 2011 #1
    A laser emitting light with a wavelength of 560 nm is directed at a single slit, producing an interference pattern on a screen that is 3.0 m away. The central maximum is 5.0 cm wide.

    determine the width of the slit and the distance between adjacent maxima.


    i used this equation:

    [itex]\lambda[/itex] = w L / delta y

    i got 6.7 X 10 ^-5 m for the width of the slit

    what i'm unsure of is the distance of the adjacent maxima, i'm not even sure where to begin
  2. jcsd
  3. Aug 11, 2011 #2
    You should use the equation that links the intensity and the angle for a single slit.
    It is easy to maximize if you know some of the basic properties of the sinc function.

    Hope it helps!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook