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WAEC Biology 2012 Question 18

Question 18

Sense Organs

The function of the convex lens in the correction of eye defects is to

  1. A.diverge light rays from far objects to focus image on the retina.
  2. B.converge light rays to focus image behind the retina.
  3. C.converge light rays to focus the image before the retina.
  4. D.converge light rays from far objects to focus their image on the retina.
Show the answer and explanation

Answer: D (converge light rays from far objects to focus their image on the retina.)

Explanation

A convex lens converges light rays so that the image falls exactly on the retina, correcting long sight.