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Images on a retina

  1. Mar 29, 2010 #1
    1. The problem statement, all variables and given/known data
    Which forms the larger image on the retina of your eye: a 43 ft tree seen from a distance of 210 ft, or a 12 in flower viewed from a distance of 2.0 ft?

    2. Relevant equations

    3. The attempt at a solution
    I don't really understand how you would go about working this out, but using my common sense, I'd imagine that it is the flower. However, I was wondering if anybody could guide me if there is in fact a particular way of figuring this out? Thanks
  2. jcsd
  3. Mar 29, 2010 #2


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    Science Advisor
    Homework Helper

    Assume the distance from the lens to the image is the same
    Then it's just a question of which triangle has a larger angle.
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