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!

Focal length

  1. Jul 18, 2005 #1
    Can someone tell me what sort of equation I would use for this question, I can't use the magnification as I have two unknowns. At least I don't know how to apply the magnification equation to this question.

    A microscope is made in a tube 25.0cm long. It magnifies 5.00 x 10 to the 2 times, 50.0 times by the objective lens and 10 times by the eyepiece. What is the focal length of the two lenses?
     
  2. jcsd
  3. Jul 18, 2005 #2

    OlderDan

    User Avatar
    Science Advisor
    Homework Helper

  4. Jul 31, 2005 #3
    What do you need to get greater magnification, a wider objective lens? :bugeye:
     
  5. Jul 31, 2005 #4
    magnification is given by the eq. M = -q / p

    see if that helps
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Focal length
  1. Focal length (Replies: 1)

  2. Focal Length (Replies: 1)

  3. Focal Length (Replies: 0)

  4. Focal length (Replies: 2)

  5. Focal length (Replies: 1)

Loading...