University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 35 - Interference - Problems - Discussion Questions - Page 1179: Q35.1


The pattern will become narrower.

Work Step by Step

Equation 35.6 gives the position of the mth bright band in a 2-slip interference pattern. $$y_m=R\frac{m \lambda}{d}$$ When the apparatus is immersed in water, the wavelength of the light decreases by a factor of 1.33, water’s index of refraction. All of the fringes move toward the centerline of the pattern, making the pattern more narrow by a factor of 1.33.
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