Answer
1.41
Work Step by Step
Speed of light in the core $v= 2.13\times10^{8}m/s$
Speed of light in vacuum $c=3.00\times10^{8}m/s$
Index of refraction $n= \frac{c}{v}$
$=\frac{3.00\times10^{8}m/s}{2.13\times10^{8}m/s}= 1.41$
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 22 - Reflection and Refraction of Light - Learning Path Questions and Exercises - Exercises - Page 774: 11
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