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!

Questions about intensity

  1. Mar 5, 2015 #1
    I think basic definition of intensity is power by area.
    How intensity is square of the amplitude?
    How intensity is energy density times speed of thing?
    How in a radiation of EM wave,
    Half of the intensity is provided by elec.field and other by magnetic field?
  2. jcsd
  3. Mar 6, 2015 #2
    NCERT example 8.5 right?
  4. Mar 6, 2015 #3
    Yeah, I got all the answers of that by some searching.
    Can you answer this one,
    In wave optics
    taking size of light source =s and distance from 2 slits S,
    How s/S <= λ/d
    for the fringe formation to take place?
    Last edited: Mar 6, 2015
  5. Mar 6, 2015 #4
    Size of light source??
  6. Mar 6, 2015 #5
    As in NCERT example 10.4 (d) .
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Questions about intensity