92 Figure 35-56a shows two light rays that are initially in phase as they travel upward through a block of plastic, with wavelength 400 nm as measured in air. Light ray r, exits directly into air. However, before light ray r, exits into air, it travels through a liquid in a hollow cylinder within the plastic. Initially the height Lúq of the liquid is 40.0 um, but then the liquid begins to evaporate. Let o be the phase difference between rays r, and r, once they both exit into the air. Figure 35-56b shows versus the liquid's height Lig until the liquid disappears, with o given in terms of wavelength and the horizontal scale set by L, = 40.00 µm. What are (a) the index of refraction of the plastic and (b) the index of refraction of the liquid? 60 L'ia 20 - Plastic L, Liq (um) (a) (6) (Y) ¢

92 Figure 35-56a shows two light rays that are initially in phase as they travel upward through a block of plastic, with wavelength 400 nm as measured in air. Light ray r, exits directly into air. However, before light ray r, exits into air, it travels through a liquid in a hollow cylinder within the plastic. Initially the height Lúq of the liquid is 40.0 um, but then the liquid begins to evaporate. Let o be the phase difference between rays r, and r, once they both exit into the air. Figure 35-56b shows versus the liquid's height Lig until the liquid disappears, with o given in terms of wavelength and the horizontal scale set by L, = 40.00 µm. What are (a) the index of refraction of the plastic and (b) the index of refraction of the liquid? 60 L'ia 20 - Plastic L, Liq (um) (a) (6) (Y) ¢

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

92 Figure 35-56a shows two light rays that are initially in phase
as they travel upward through a block of plastic, with wavelength
400 nm as measured in air. Light ray r, exits directly into air.
However, before light ray r, exits into air, it travels through a liquid
in a hollow cylinder within the plastic. Initially the height Lúq of the
liquid is 40.0 um, but then the liquid begins to evaporate. Let o be
the phase difference between rays r, and r, once they both exit into
the air. Figure 35-56b shows versus the liquid's height Lig
until the liquid disappears, with o given in terms of wavelength and
the horizontal scale set by L, = 40.00 µm. What are (a) the index of
refraction of the plastic and (b) the index of refraction of the
liquid?
60
L'ia
20
- Plastic
L,
Liq (um)
(a)
(6)
(Y) ¢

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