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A person's face is 30.0 cm in front of a concave makeup mirror, producing an upright image that is 1.39 times as large as the object.
What is the mirror's focal length f?
f= Number
Units
cm

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A person's face is 30.0 cm in front of a concave makeup mirror, producing an upright image that is 1.39 times as large as the object. What is the mirror's focal length f? f= Number Units cm

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