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

Homework Help: Thin lens and images

  1. Jan 30, 2010 #1
    1. The problem statement, all variables and given/known data

    Under what conditions will a thin converging lens form:
    a) a real image,
    b) an inverted image,
    and c) an image smaller than the object?

    2. Relevant equations


    3. The attempt at a solution

    I have concluded that:
    a) the object needs to be outside the focal length
    b) the same
    c) the objects needs to be outside twice the focal length.

    I am not sure if the answers are right. Can you please check for me? Thank you!
    Last edited: Jan 30, 2010
  2. jcsd
  3. Jan 30, 2010 #2


    User Avatar
    Homework Helper

    Your answers are correct.
  4. Feb 1, 2010 #3
    Thank you to both Stanton and rl.bhat. I was looking for this problem. :)
    Last edited: Feb 1, 2010
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook