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A 5-cm-high object is placed in front of a concave mirror with a radius of curvature of 20cm. Determine the image height if the object's

A 5-cm-high object is placed in front of a concave mirror with a radius of

curvature of 20cm. Determine the image height if the object's distance is (a) 5cm,

(b) 15 cm, ( c) 20 cm, and (d) 30 cm.

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