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: Self-Reproducing Rays in a symmetric Resonator

  1. May 23, 2008 #1
    1. The problem statement, all variables and given/known data

    Self-Reproducing Rays in a symmetric Resonator. Consider a symmetric resonator using two concave mirrors of radii R separated by a distance d=3|R|/2. After how many round trips through the resonator will a ray retrace its path?

    2. Relevant equations

    3. The attempt at a solution

    i dont know where to start and equations to work with
  2. jcsd
  3. May 23, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    I'd start by looking up the focal length of a mirror of radius R.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook