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Quick question: magnification

  1. Mar 31, 2007 #1
    1. The problem statement, all variables and given/known data
    If someone wouldn't mind, would you please check my work, i would really appreciate it: I have only one chance to get the answer correct.
    [​IMG]


    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Mar 31, 2007 #2

    hage567

    User Avatar
    Homework Helper

    Yes, I think this is right.

    There is a way you can check if your answer makes sense. Since you have found the object distance, 9.37cm, you can get the image distance, which is -3.59*9.37 = 33.64 cm (from your magnification equation). If you put both of those back into your lens equation so (1/f) = (1/9.37)+(-1/33.64) it should work out to your focal length that you were given in the question. If it doesn't, you have made a mistake somewhere. Try it. It's a useful way to check your work on tests.
     
  4. Mar 31, 2007 #3
    It was correct! Thank you for the tip!
     
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