College Physics (7th Edition)

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: 21


Wavelength $=140.26nm$ Frequency $=1.55\times10^{15}Hz$

Work Step by Step

Required wavelength $=\frac{lambda_{air}}{n}=\frac{193nm}{1.376}=140.26nm$ Frequency of light does not change in the medium. So, required frequency =$\frac{c}{lambda_{air}}=\frac{3\times10^{8}}{193\times10^{-9}}=1.55\times10^{15} Hz$
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