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!

Optic question

  1. Mar 23, 2010 #1
    1. The problem statement, all variables and given/known data
    A light ray travalling parallel to the principles axis at a distance y. it strikes a spherical concave mirror of radius R the ray is focused on the point S |OS|=f

    a) show that the f is given by:

    f= R- [R2-y2/ 2(R2-y2)½]

    b) what is the value of when R>> y2 conclude the result

    2. Relevant equations
    tan2θ= 2tanθ/(1+tan2θ)

    3. The attempt at a solution
    look above

    http://img13.imageshack.us/img13/6228/adszrn.jpg [Broken]
    1. The problem statement, all variables and given/known data
    Last edited by a moderator: May 4, 2017
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Discussions: Optic question
  1. Optics question (Replies: 11)

  2. Optics question (Replies: 1)

  3. Optics question (Replies: 2)

  4. Optics question (Replies: 1)

  5. Question on optics (Replies: 2)