
Concept explainers
Use the above diagram to answer the following questions.
1. From which of the labeled points could an observer sec the image of the eraser? Draw rays to support your answer. (If possible. use a different color ink to draw these rays.)
From which point(s) could an observer see the entire image of the pencil? Explain.
To an observer at such u point, which would appear larger: the image of the pencil (with the lens in place) or the pencil (with the lens removed)? Explain how you can tell from the ray diagram.
2. If you were to measure the length of the pencil and the length of the image using a ruler, ehich would actually be larger? Explain how you can tell from the ray diagram.

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