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JAMB Physics 1978 Question 48

Question 48

Lenses and Optical Instruments

For the correction of myopic defects in the human eye we require

  1. A.a convex lens
  2. B.a concave lens
  3. C.a combination of concave and convex lenses
  4. D.a prism
  5. E.a concave mirror.
Show the answer and explanation

Answer: B (a concave lens)

Explanation

A short-sighted (myopic) eye focuses distant light in front of the retina; a diverging (concave) lens spreads the rays so they focus on the retina.