Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Using the formula 1/f = 1/object distance + 1/image distance, in the

  1. Apr 16, 2010 #1
    Using the formula 1/f = 1/object distance + 1/image distance,
    in the instance where you have two plano-convex lenses glued together on their flat sides, what does it mean if your image distance from the first lens is negative? is the image in front of the second lens or behind the second lens?

    This is not a homework problem!!!
     
  2. jcsd
  3. Apr 16, 2010 #2

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor
    2016 Award

    Re: Optics

    since we can consider the cemented doublet as a single lens, having d_i <0 means it is a virtual image (the doublet has negative power).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Using the formula 1/f = 1/object distance + 1/image distance, in the
  1. 1 Volt? (Replies: 1)

  2. 1/v + 1/u =1/f (Replies: 10)

Loading...