Task id17249
Two plates of the same substance, 3.8 mm and 9.0 mm thick, are alternately introduced into a narrow beam of monochromatic light and it is observed that the first plate transmits 0.84 luminous flux, the second - 0.70. Determine the absorption coefficient and thickness of the half-absorption layer of this substance. Neglect secondary reflections of light.
Detailed solution. Format gif
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