MCAT Physics Question — Far-Sightedness | Next Step Test Prep MCAT Physics Question — Far-Sightedness | Next Step Test Prep

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When a far-sighted individual sees an object up close, the image is projected beyond the retina, and either the muscles controlling lens curvature or the lens tissue itself cannot accommodate the required change in focal length to put the image on the retina. In order to correct this problem, a far-sighted individual requires:

A) convergent lenses to move the image closer to the lens.

B) convergent lenses to move the image farther away from the lens.

C) divergent lenses to move the image closer to the lens.

D) divergent lenses to move the image farther away from the lens.

Explanation

Qualitatively, glasses with convergent lenses move the image nearer to the lens of the eye, and glasses with divergent lenses move the image farther from the lens of the eye. Near-sighted individuals require divergent lenses, and far-sighted individuals require convergent lenses.

A) convergent lenses to move the image closer to the lens. Correct.

B) convergent lenses to move the image farther away from the lens. Incorrect, Convergent lenses move the image closer to the lens.

C) divergent lenses to move the image closer to the lens. Incorrect, Divergent lenses move the image farther from the lens, and are worn by near-sighted people.

D) divergent lenses to move the image farther away from the lens. Incorrect, Divergent lenses are worn by near-sighted people.

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