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July 28, 2014

Homework Help: physics

Posted by Anon on Thursday, January 31, 2013 at 6:15pm.

A light bulb is placed 17.1 cm in front of a concave mirror. When the concave mirror is replaced by a plane mirror in the same location, the bulb's image moves 6.60 cm closer to the mirror. Calculate the focal length of the concave mirror.

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