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Homework Help: Vertical flat mirror

  1. Feb 7, 2005 #1
    determine the minimum height of a vertical flat mirror in which a person 5'0'' in height can see his or her full image.

    I have absolutely no idea how to solve this type of problem...

    Since we dont know the distance between the object and the mirror, how in the world can we calculate the minimum height of a vertical flat mirror?
  2. jcsd
  3. Feb 8, 2005 #2


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    The problem's giving you all the data you need.Try to think of how light rays come from infinity...

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