1. Limited time only! Sign up for a free 30min personal 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!

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