Question: A woman cannot see objects clearly when they are farther than 12.5 m away. (a) Does she have (1) near-sightedness, (2) farsightedness, or (3) astigmatism?

A woman cannot see objects clearly when they are farther than 12.5 m away.
(a) Does she have (1) near-sightedness, (2) farsightedness, or (3) astigmatism? Explain.
(b) Which type of lens will allow her to see distant objects clearly, and of what power should the lens be?

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