Answer
a). $(1)$ converging,
b). $+2D$
Work Step by Step
a). (1) converging, since the person is farsighted.
b). $f=50cm=0.5m$
Power $=P=\frac{1}{f}=\frac{1}{0.5}=+2D$
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Chapter 25 - Vision and Optical Instruments - Learning Path Questions and Exercises - Exercises - Page 871: 4
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