Answered: laser beam traveling through fog was…

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter34: Electromagnetic Waves

Section: Chapter Questions

Problem 34.11OQ

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A laser beam traveling through fog was observed to have an intensity of 1 (μW/m2) at a distance of 2 m from the laser gun and an intensity of 0.2(μW/m²) at a distance of 3 m. Given that the intensity of an electromagnetic wave is proportional to the square of its electric-field amplitude, find the attenuation constant α of fog.

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