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MMLU / Optometrists use a linear scale of lens power, measured in diopters, to…

Problem

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question

Optometrists use a linear scale of lens power, measured in diopters, to prescribe corrective lenses. Sufferers of myopia, or nearsightedness, have difficulty resolving distant objects because the lenses in their eyes are too strong. If a myopic person has a prescription of -5 diopters, what image do her corrective lenses create for distant objects?

choices

  1. An upright, real image about 20 cm in front of her eyes
  2. An upright, virtual image about 20 cm in front of her eyes
  3. An inverted, real image about 20 cm behind her eyes
  4. An inverted, virtual image 5 cm behind her eyes

subject

high_school_physics

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Official source

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