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Homework Help: Optic homework problem

  1. Sep 10, 2010 #1
    A blade parallel faces is 5 mm thick. Taken to a microscope it appears that, to pass on the focus of a surface point to a point on the underside of the blade should move the cannon from the microscope 3mm. What is the refractive index of the material it is made the blade?



    EDIT: Sorry, i cant delete the post now, i'm nwe here e sorry again. I can't read the rules, but now read it.
  2. jcsd
  3. Sep 10, 2010 #2


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    Staff: Mentor

    Re: Optic

    No need to delete, just please describe what you are aking in a bit more detail. Is this a question, and you are given the answer and asked to show the calculations? Is 5/3 supposed to be the answer? Can you describe how you should approach this problem, and list what the Relevant Equations are?
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