As people age, the lens becomes less flexible, and the ciliary muscles weaken, reducing the eye's ability to focus on nearby objects. This condition is called presbyopia, and it is corrected using reading glasses or bifocals.
Why do older people often need reading glasses?admin2024-10-18T05:37:05+05:30
The ciliary muscles adjust the shape of the lens, making it thicker for nearby objects and thinner for distant objects, allowing the eye to focus light properly on the retina.
How does the eye focus light from objects at different distances?admin2024-10-18T05:36:47+05:30
Yes, an object can have acceleration even if its speed is constant, as in the case of centripetal acceleration, where only the direction of velocity changes (e.g., circular motion).
Can an object have acceleration if its speed is constant?admin2024-09-11T01:06:16+05:30
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