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!

Stuck in wave interference question

  1. Feb 10, 2016 #1
    1. The problem statement, all variables and given/known data

    Light of 576 nm wavelength is directed at a two-slit apparatus and produces a famous intensity pattern on a screen 75.0 cm away. Each slit is 0.434 mm wide, and the center-to-center separation of the slits is 0.640 mm.

    Given that the intensity at the very center of the pattern is 5.00×10−4W/m2 , determine the intensity at a point a distance 0.900 mm , measured along the screen, from the very center.

    The question had lots of numbers, so I just posted a pic instead of typing everything in latex. (sorry!)

    2. Relevant equations

    Look at picture!

    3. The attempt at a solution
    Look at picture in attachment!

    Attached Files:

  2. jcsd
  3. Feb 10, 2016 #2


    User Avatar
    Science Advisor
    Homework Helper

    The ##d## in the intensity pattern equation is the center-to-center distance between the slits, it's not the distance between the inner edges of the slit as you seem to have assumed.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Stuck in wave interference question