How tall is the pencil image

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Reference no: EM13101185

When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall. (a) What is the mirror's focal length? (b) How tall is the pencil's image if the pencil is moved to a distance of 49 cm from mirror ( include sign if negative) did this problem like 5 times still can't get the correct answer.

Reference no: EM13101185

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