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Question: A light bulb is placed 13.6 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 4.80 cm closer to the mirror.

Part A: Calculate the focal length of the concave mirror.

Any help I can get on this questions greatly appreciated! I'm not too familiar with this question.

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Category:- Physics
Reference No.:- M91239040

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