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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
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