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Homework Help: Extremely simple spherical mirrors question

  1. Dec 4, 2007 #1
    1. The problem statement, all variables and given/known data
    A 3cm tall object is a distance 24cm from the center of a mirror, the focal distance is 6cm from the center of the mirror. What is the images distance from the center of the mirror?
    How tall is the image?

    2. Relevant equations

    3. The attempt at a solution

    Since the object's distance is further away than the focal length you know that the image is real so the sign on i, the image distance is positive

    1/24 + 1/i = 1/6

    1/i = 3/24 = 1/8

    i = 8cm

    The magnification is m = -8/24 = -1/3

    So the height of the image is 3cm(-1/3) = -1cm.

    Is this right?
  2. jcsd
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