Question: Anna Holds A 11 D Magnifier Directly In Front Of Her Eye To G….

Anna holds a 11 D magnifier directly in front of her eye to get a close look at a 19-mm -diameter penny. Assume a typical 25 cmnear point and a distance of 1.7 cm between the lens and the retina.

Part A:

What is the closest possible distance that she can hold the coin to have it appear in focus?

Express your answer with the appropriate units.

Answer: 6.7 cm

Part B:

At this distance, how large does the image of the coin appear on her retina?

Express your answer with the appropriate units.

Answer: IDK, Help please!

71.25 mm is not the right answer!

Prof. Angela

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