Neural Control and Coordination · NEET Preparation Zoology
When the human eye changes its focus from a distant object to a nearby object, which change occurs?
Practice question from Neural Control and Coordination (NEET Preparation Zoology), with the correct answer and a step-by-step solution.
medium · MCQ · Q-30CAFF
When the human eye changes its focus from a distant object to a nearby object, which change occurs?
- A.Ciliary muscles relax and the lens becomes flatter
- B.Ciliary muscles contract and the lens becomes more convexCorrect answer
- C.Suspensory ligaments become taut and the lens becomes more convex
- D.The pupil dilates and the focal length of the lens increases
Solution
For viewing a nearby object, ciliary muscles contract. This reduces tension on the suspensory ligaments, allowing the elastic lens to become more convex and increase its refractive power.
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