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Diverging lens optics

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  1. Sep 20, 2014 #1
    Diverging lens has focal length 6mm and image magnification 0.5. What is the distance between object and lens?

    I used the fact that distance image to lens/distance object to lens = 0.5 and the lens maker formula with f=-6 and combined the two formula but this gives distance = 18mm, when answer is in fact 6mm.
    Where have I gone wrong?
     
  2. jcsd
  3. Sep 20, 2014 #2

    ehild

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    Homework Helper
    Gold Member

    Show your work. Take care of the signs.

    ehild
     
  4. Sep 20, 2014 #3
    thanks solved it
     
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