Biology

Biology, 03.07.2019 17:20, angoliabirtio

If a nearsighted person has a far point df that is 3.50m from the eye, what is the focal length f1 of the contact lenses that the person would need to see an object at infinity clearly?

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If a nearsighted person has a far point df that is 3.50m from the eye, what is the focal length f1 o...

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