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Homework Help: Ray Optics Question #1

  1. Jan 27, 2010 #1
    1. The problem statement, all variables and given/known data

    An object is 12 cm in front of a concave mirror with a focal length of 21 cm .

    Locate the image in s'
    Is the image upright or inverted?

    2. Relevant equations
    willl get back with it

    3. The attempt at a solution
    Im not sure where to start, this should be a simple problem
  2. jcsd
  3. Jan 28, 2010 #2


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    Staff Emeritus
    Science Advisor
    Homework Helper

    There is a standard equation relating the focal length to the object and image distances. It should be in your textbook. It's the same equation that is used for a lens .

    Hope that helps get you started.
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