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Homework Help: Real 3D Image produced by concave lens

  1. Aug 10, 2013 #1
    1. The problem statement, all variables and given/known data
    Find the correct image produced by the concave lens. F is focal length.

    2. Relevant equations
    If an object is placed between F and 2F, the image will be inverted, real, larger and beyond 2F.

    3. The attempt at a solution
    I choose the answer A. Is it correct?

    *Please refer attachments. Thanks!

    Attached Files:

  2. jcsd
  3. Aug 12, 2013 #2
    Use a ray diagram to resolve this problem. The arrow head of the object is closer to the lens.
  4. Aug 12, 2013 #3
    Thanks, the answer is B. I marked it wrong anyway! :/
  5. Aug 13, 2013 #4
    My ray diagram suggests neither are correct?
  6. Aug 13, 2013 #5
    Sorry, I think the image makes a little fuzzy. That arrow curve is perpendicular to the axis. In this image it looks it's headed towards i see.
  7. Aug 14, 2013 #6
    The image is smaller, upright and virtual.

    Attached Files:

  8. Aug 15, 2013 #7
    My bad. It's a convex lens :( Sorry, now only noticed.
    I think now you can get it correct. Thanks for the support. :) It was in my exam paper and I chose the wrong one anyway! :(
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