Q: Figure 35-5Ia shows two light rays that are initially in phase as they travel upward through a block...
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Light x 12720Wavelength x 3851phase x 9302Refraction x 854Index x 12310
Figure 35-5Ia 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 r1 exits directly into air. However, before light ray r2 exits into air, it travels through a liquid in a hollow cylinder within the plastic. Initially the height Lliq of the liquid is 40.0 µm, but then the liquid begins to evaporate. Let ? be the phase difference between rays r1 and r2 once they both exit into the air. Fi ure 35-51b shows ? versus the liquid"s height Lliq until the liquid disappears, with ? given in terms of wavelength and the horizontal scale set by Ls= 40.00 µm. What are (a) the index of refraction of the plastic and (b) the index of refraction of the liquid?
