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Angular magnification, given F and di

  1. Dec 13, 2012 #1
    A Jeweler, whose near point is 40.0cm from his eye, is using a magnifying glass to examine a gold ring. The lens of the magnifying glass has a focal length of 5.00cm ( part C) Determine the angular magnification of the magnifying glass when the virtual image of the ring is located 165 cm from the lens.



    1/f = 1/do + 1/di
    M = (1/f - 1/q)N.P.




    [(1/5) - (1/165)]40cm = 7.76cm (right answer is 8.24 centimeters ***edit NOT meters. just cm im just tired and almost done my last exam*** ) and i cant figure out how to get it
     
    Last edited: Dec 13, 2012
  2. jcsd
  3. Dec 13, 2012 #2
    nvm, i didnt figure it out.
     
    Last edited: Dec 13, 2012
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