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ppk ppk
wrote...
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Posts: 3560
12 years ago
The focal length of a lens is 5 m. What is the refractive power of this lens in diopters?
A) 0.1 diopters
B) 0.2 diopters
C) 0.3 diopters
D) 0.4 diopters
E) 0.5 diopters
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wrote...
12 years ago
B
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