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    anony12's Avatar
    anony12 Posts: 13, Reputation: 1
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    #1

    Jun 1, 2009, 04:14 PM
    I have a math q. on microscopes
    I'm really stuck with this question and I have no idea how to start.

    Q. A compound microscope has an objective lens with a focal length of 5 cm and an eyepiece with a focal length of 1 cm. If its magnification is 100X then the tube length is:

    A 12 cm
    B 0.05 cm
    C 20 cm
    D 6 cm
    E 10 cm

    I really need help in working out this question, please.
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Jun 1, 2009, 04:50 PM

    This site should provide all of the information you want:

    Microscope
    anony12's Avatar
    anony12 Posts: 13, Reputation: 1
    New Member
    		  
    #3

    Jun 2, 2009, 01:38 AM

    Thanks a lot for that!
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