Exam-style question
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What is the purpose of using a ray diagram in vision correction?.
- A.To measure the size of the lens
- B.To show how light rays interact with lenses
- C.To calculate the focal length of the lens
- D.To determine the power of the lens
Model answer
What a good answer should say
- To show how light rays interact with lenses
Explanation
Why this works
Ray diagrams illustrate how light rays pass through lenses, helping to visualize image formation and the effects of lens curvature on vision correction.
Common mistake
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