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Homework Help: Help with Images and Optical Instrument Question

  1. Nov 26, 2009 #1
    An object is placed two focal lengths from a diverging lens, (a) What kind of image forms? (b) What is the magnification? (c) Where is the image?

    I am pretty sure the image is virtual, as for (b) and (c) I have no idea what to do.. Looking for some help, thanks in advance..

    (a) I am pretty sure it is virtual
    I am not sure what to do for b or c, I know we are looking for the Si for c, and as far as b goes I am not sure what magnification formula to use as we are given no values.
    Thanks in advance,
  2. jcsd
  3. Nov 26, 2009 #2


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    Homework Helper

    The object distance do is 2f, focal length is f. Find the image distance di using relevant equation. It should be less than f. Magnification = di/do
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