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JAMB Physics 1993 Question 30

Question 30

Lenses and Optical Instruments

The property of the eye known as its power of accommodation is controlled by the

  1. A.pupil
  2. B.vitreous humour
  3. C.iris
  4. D.ciliary muscles.
Show the answer and explanation

Answer: D (ciliary muscles.)

Explanation

The ciliary muscles change the thickness of the eye lens, which changes its focal length so it can focus near and far objects.