1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding the width of a slit

  1. Nov 11, 2009 #1
    1. When blue light of wavelength 450 nm falls on a single slit, the first dark bands on either side of center are separated by 51.5°. Determine the width of the slit.




    2. sin[tex]\theta[/tex]=[tex]\lambda[/tex]/w



    3. w=450e-9/sin(51.5)=5.75x10-7
    I tried this but it said it was wrong, if anyone could help that would be great.
     
  2. jcsd
  3. Nov 12, 2009 #2

    rl.bhat

    User Avatar
    Homework Helper

    In the problem the given angle is the separation dark bands on either side.
    So θ = 51.5/2 degrees.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Finding the width of a slit
  1. Slit width (Replies: 5)

  2. Width of slit (Replies: 1)

  3. Width of the slit (Replies: 4)

Loading...