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

Plz help me in this light problem

  1. Mar 5, 2005 #1

    plz help me in the following problem?

    "The electric field at point P due to N slits is,

    E (r, theta, t) = A(r) sin (N delta phi/2) cos(kr-wt)
    sin (delta phi/2)

    where delta phi=kdsin (theta) , "d" being the spacing between the adjacent slits. let N=4

    (a) Find two angles on either side of theta=0 at which there is an interference minima.
    (b) Find the spacing between the minima compare to the case of only two slits of separation "d".

    Now i have solve its (a) part but i just cant solve its (b) part.

    Can u plz help me in this plzzzzzzzzzzzzzzzzz.

    Thanks in advance!
  2. jcsd
  3. Mar 14, 2005 #2
    please post this in the homework help part of the forum
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Plz help me in this light problem
  1. Help Me (Replies: 10)

  2. Help Plz (Replies: 3)