A 2.75-cm-high object is placed 2.50 cm in front of a concave mirror. If the image is 4.50 cm high and virtual, what is

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answerhappygod
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A 2.75-cm-high object is placed 2.50 cm in front of a concave mirror. If the image is 4.50 cm high and virtual, what is

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A 2.75-cm-high object is placed 2.50 cm in front of a concave
mirror. If the image is 4.50 cm high and virtual, what is the focal
length of the mirror?
_____ cm
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