A concave shaving mirror has a radius of curvature of 399
A concave shaving mirror has a radius of curvature of +39.9 cm. It is positioned so that the (upright) image of a man's face is 1.54 times the size of the face. How far is the mirror from the face?
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a concave shaving mirror has a radius of curvature of 399 cm it is positioned so that the upright image of a mans face
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