Where must an object be placed in front of a focal-length converging lens so that the…

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

Problem

Where must an object be placed in front of a 20 cm20\,\text{cm} focal-length converging lens so that the resulting image is the same size as the object and inverted? Give your answer as the object distance from the lens.

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