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A Simple Magnifier of Refractive Power 15

Question 7

Multiple Choice

A simple magnifier of refractive power 15.0 D is used to observe a beetle on a student's desk. Assume that the magnifier is held close to the student's eye. If the image of the beetle is twice as large as the beetle itself, how far away is the image formed relative to the lens?


A) 6.7 cm
B) 8.3 cm
C) 3.3 cm
D) 10 cm
E) 20 cm

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