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JAMB Physics 1990 Question 29

Question 29

Lenses and Optical Instruments

For a short sighted person, light rays from a point on a very distant object is focused

  1. A.in front of the retina
  2. B.on the retina by a converging lens
  3. C.behind the retina by a diverging lens
  4. D.in front of the retina a distance 2F from the lens.
Show the answer and explanation

Answer: A (in front of the retina)

Explanation

A short-sighted eye is too strong (or too long), so parallel rays from far away meet in front of the retina.