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July 31, 2015

Homework Help: physics

Posted by TP on Thursday, November 10, 2011 at 5:12pm.

A screen is placed exactly one meter away from an illuminated test pattern. A lens placed between them forms a clear (focused) image of the pattern on the screen when the center of the lens is 200 mm from the test pattern. What is the focal length of the lens? ( cm)

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