Exam-style question
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How does the eye focus on a nearby object?.
- A.The lens becomes flatter
- B.The lens becomes thicker
- C.The pupil dilates
- D.The cornea changes shape
Model answer
What a good answer should say
- The lens becomes thicker
Explanation
Why this works
To focus on nearby objects, the ciliary muscles contract, causing the lens to become thicker, which increases its optical power and allows for clear vision.
Common mistake
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