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Homework Help: Optics problem

  1. Oct 22, 2005 #1
    Are considered two identical diverging lenses, each one of focal distance -10cm and separated 25cm. which it is the position of the image of an object located in the infinite? The answer is: Virtual image and to 7,7 cm of the second lens. I need to know how to solve the problem, step by step.
     
  2. jcsd
  3. Oct 23, 2005 #2

    Doc Al

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    Staff: Mentor

    To get help, show what you've done so far. (Hint: Use the thin lens formula-twice.)
     
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