WAEC - Biology (2020 - No. 19)
What happens when the ciliary muscles of the eye contract? The
lens become more concave
lens become more convex
lens gets a longer focal length
suspensory ligament becomes tight
説明
When the ciliary muscles of the eye contract, the lens becomes more convex. This is because the contraction of the ciliary muscles reduces the tension on the suspensory ligaments holding the lens in place, allowing the lens to take on a more rounded (convex) shape. This increases the lens's refractive power, allowing for closer objects to be brought into focus.