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tankster tankster
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Posts: 851
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7 years ago
A nearsighted person has a far point that is 4.2 m from his eyes. What focal length lenses must he use in his contact lenses to allow him to focus on distant objects?
A) -4.2 m
B) 4.2 m
C) -5.2 m
D) 5.2 m
E) 4.8 m
Textbook 
Physics

Physics


Edition: 4th
Author:
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Answer verified by a subject expert
Raj.SRaj.S
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Posts: 854
7 years ago
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tankster Author
wrote...

7 years ago
Good timing, thanks!
wrote...

Yesterday
Thanks
wrote...

2 hours ago
Helped a lot
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