Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 27 - Optical Instruments - Problems and Conceptual Exercises - Page 969: 3

Answer

Flower

Work Step by Step

Assume the eye consists of a thin lens 2.5 cm from the retina (problem 2). We can find the image height of the tree as $h_i=\frac{d_i}{d_{\circ}}h_{\circ}$ We plug in the known values to obtain: $h_i=\frac{2.5cm}{210ft}(43ft)=0.51cm$ We can find the image height of the flower as $h_i=\frac{d_i}{d_{\circ}}h_{\circ}$ We plug in the known values to obtain: $h_i=\frac{2.5cm}{2.0ft}(1.0ft)=1.3cm$ Thus, the flower forms the larger image.
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