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The focal length of the natural eye lens is variable due to the action of...

Physics
JAMB 2025

The focal length of the natural eye lens is variable due to the action of the 

  • A. Optical fluid
  • B. Ciliary muscle
  • C. Vitreous humor
  • D. retina nerves
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Correct Answer: Option B
Explanation

B. Ciliary muscle.

The ciliary muscles control the shape of the lens, allowing the eye to focus on objects at different distances by changing the focal length of the lens.

There is an explanation video available below.

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Explanation Video

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