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Solving a problem in physics section 27 point 19 optics

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19. In a quartz plate 5 cm thick passed infrared rays. The angle of incidence is zero. It is known that infrared rays with a wavelength λ1 = 2,72 micron linear attenuation coefficient k1 = 0,2 cm-1, and for the beams with λ2 = 4,50 - k2 = 7,3 cm-1. Define layers half attenuation x1 and x2, respectively, for λ1 and λ2 and the relative change in the intensity of the rays after passing a quartz plate.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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