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!

Homework Help: Change of momentum of photon upon reflection

  1. Apr 6, 2009 #1
    1. What is the change in momentum of a photon when it bounces off a mirror?
    (assuming it's a perfect mirror)

    My guess is that it's [tex]2h/\lambda[/tex]. But i think it should be more complex than this.
  2. jcsd
  3. Apr 6, 2009 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    You're guess is correct.

    I suspect it was more than a guess, and that you are actually thinking about it correctly! :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook