Physics

Physics

Problem

A concave lens with focal length magnitude 18 cm is used to produce an upright image that is exactly one-third the height of the object. How far from the lens must the object be placed? a) 18 cm18\,\text{cm} b) 24 cm24\,\text{cm} c) 36 cm36\,\text{cm} d) 72 cm72\,\text{cm}

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