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-   -   Concave 4.0 (https://www.askmehelpdesk.com/showthread.php?t=114833)

  • Jul 30, 2007, 09:21 AM
    busylady111
    Concave 4.0
    A 4,0-cm object is placed 6.0cm in front of a mirror. The virtual image is 6.0 cm further from the mirror when the mirror is concave than when it is planar. Determine the focal length of the concave mirror.
  • Jul 31, 2007, 08:10 AM
    mmjdny
    Where is the observer??

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