8.1.4.12 Geometric and physical applications

Problem: The amount of light, absorbed when passing through a thin layer of water, is proportional to the amount of incident light and the thickness of the layer. Knowing that when passing through a 2 -meter-thick layer of water \( 1 / 3 \) of the initial flow of light is absorbed, find what portion of it will reach a depth of 12 meters. clip2net.com