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Help with height of image in a mirror

  1. May 23, 2012 #1
    An object which is 0.54m tall is located 1.23m in front of a plane mirror.
    How tall is the image as seen in the mirror?

    I know that the image seems to be 1.23m from the surface of the mirror and that the object seems to be 2.460m from the image.

    What equation do I need to use to figure out how tall the image is in the mirror.
     
  2. jcsd
  3. May 24, 2012 #2

    tiny-tim

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    hi re496210! :smile:
    common-sense? :wink:

    (or just look in a mirror)
     
  4. May 24, 2012 #3
    Thanks! I thought that that was the correct answer, but every time I entered .54m into the homework, the system told me that I need more digits. I tried 0.540m and that finally worked for me.
     
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