Magnifying Glass With the Image at the Near Point of the Eye: A person with normal eyesight uses a converging lens of focal length 10 cm as a magnifying glass to finish an engraving job. To see detail, he holds the lens very close to his eyes. At what minimum distance from the job must he hold the lens?
A. 14 cm
B. 7.1 cm
C. 9.4 cm
D. 30 cm
E. 20 cm
Answer: B
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