Multiple choice

Why do short sighted persons use concave lenses in spectacles?

  1. Concave lens can focus the image of the far off objects on the retina.

  2. Concave lens gives a clear vision.

  3. Concave lens gives erect image.

  4. None of these
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A Correct answer
Explanation

Short-sightedness (myopia) occurs when light from distant objects focuses in front of the retina. A concave lens diverges the light rays, pushing the focal point back onto the retina to allow for clear vision.

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