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KVPY2018PhysicsRay Optics

Consider the following vision defects listed in Columns I and II and the corrective measures in Column III. Choose the correct combination. Column   I Column   II Column   III P. Hypermetropia ( i ) Near-sightedness a. Convex lens Q. Myopia ( i ) Far-sightedness b. Concave lens

Options

  1. AP - i i - b
  2. BQ - i - b
  3. CP - i - a
  4. DQ - i - a

Correct answer

B. Q - i - b

Step-by-step solution

Hypermetropia is far-sightedness, a vision condition in which nearby objects are blurry. It is corrected by using convex lens or positive power lens. Myopia is near-sightedness, a condition in which close objects appear clearly but far ones do not. It is corrected using concave lens or negative power lens. In hypermetropia, image is formed behind the retina, while in myopia image is formed in front of the retina.

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