qz9f08sol - November 21, 2008 PHY2054 Discussion-Fall 08...

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November 21, 2008 PHY2054 Discussion-Fall ‘08 Quiz 9 (Chapter 23.1-23.5) Name: UFID: *1. (5pts) A person walks into a room that has, on opposite walls, two plane mirrors producing multiple images. Find the distance from the person to the third image seen in the left-hand mirror when the person is 1.50 m away from the mirror on the left wall and 2.50 m away from the mirror on the right wall. The image for a flat mirror is as far behind the mirror as the object is in front. Thus the 1 st image in the left-hand mirror is 1.50 m behind the mirror. The 1 st image in the right-hand mirror is 2.50 m behind the mirror, which is 6.50 m in front of the left-hand mirror. Thus the 2 nd image in the left hand mirror is 6.50 m behind the mirror. The 1 st image in the left-hand mirror forms the 2 nd image in the right-hand mirror, which is 5.50 m behind the mirror. Since this image is 9.50 m from the left-hand mirror. The 3 rd image in the left-hand mirror is 9.50 m behind the mirror, which is 11.0 m away from the person.
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qz9f08sol - November 21, 2008 PHY2054 Discussion-Fall 08...

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