A convex automobile side mirror has a focal length of −18 cm

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics

Problem

A convex automobile side mirror has a focal length of −18 cm. The upright image of a 1.6 m-tall truck appears to be 0.40 m tall. Determine how far the truck is from the mirror.

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