1. Not finding help here? Sign up for a free 30min 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!

Two converging lens, find the final image...

  1. Jul 31, 2016 #1
    1. The problem statement, all variables and given/known data


    lens problem.PNG

    2. Relevant equations

    [tex]\frac{1}{p}+\frac{1}{q}=\frac{1}{f}[/tex]
    3. The attempt at a solution
    I already had this typed in word so here is a screen shot:
    attempt....PNG

    I don't understand why the negative is omitted in the "correct answer" "B." In solving this problem I wanted to proceed in finding the image location relative to the first lens, which should be 9.2 cm.
     
  2. jcsd
  3. Jul 31, 2016 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    The diagram does not define the axes so the sign is arbitrary.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Two converging lens, find the final image...
Loading...