Задача 40595.

A laser beam with an intensity of I1 is incident on a cell with an optically active substance (sugar solution), after which it passes through the analyzer. Beam intensity at the output of the analyzer I2. Find the ratio I1 / I2, assuming that in the absence of a cuvette, the beam intensity at the exit from the analyzer remains equal to I1. The length of the cuvette is 20 cm, the sugar concentration is C = 0.8 g / cm ^ 2, the specific rotation is k = 0.65 deg * m ^ 3 / kg.

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