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A lamp which is 11.5 cm tall is in front of a concave mirror which has a focal length of 66.0 cm.

(a) How tall is the lamp's image if the lamp is a distance of 39.6 cm from the mirror (include sign if negative)?

(b) How tall is the lamp's image if the lamp is a distance of 85.8 cm from mirror (include sign if negative)?

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