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      Question

      A person wears spectators with concave lenses. It means

      that normally (when not using glasses), the image of distant objects is focused in his eyes –
      A behind the retina Correct Answer Incorrect Answer
      B in front of the retina Correct Answer Incorrect Answer
      C on the retina Correct Answer Incorrect Answer
      D on the blind spot Correct Answer Incorrect Answer

      Solution

      A concave lens is used to correct short-sightedness (myopia). In myopia, images are formed in front of the retina, resulting in a blurred image. This occurs when the eye is relatively too long or the refractive powers of the cornea and lens of the eye are relatively too strong.

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