A friend tells you that when she takes off her eyeglasses and holds them 23 cm above

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A friend tells you that when she takes off her eyeglasses and holds them 23 cm above a printed page the image of the print is erect but enlarged to 1.5 times its actual size.

(a) Is the image real or virtual? How do you know?

(b) What is the focal length of your friend's glasses?

(c) Are the lenses in the glasses concave or convex? Explain.

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Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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