Exam-style question
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Describe how a ray diagram can be used to illustrate the formation of an image by a converging lens.
Model answer
What a good answer should say
- A ray diagram for a converging lens shows how parallel rays of light converge at the focal point after passing through the lens.
- The diagram typically includes the principal axis, the lens, the focal points, and the object, illustrating how the image is formed on the opposite side of the lens.
Explanation
Why this works
This answer demonstrates an understanding of ray diagrams and their role in image formation, testing the student's ability to apply knowledge of optics. It requires recalling the principles of light behavior through lenses.
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