4. Light with a wavelength of 540 nm and initial intensity J passes through a layer of emulsion of tetralin in water 5 cm thick. Calculate the fraction of transmitted light and plot its dependence on the radius of particles of the dispersed phase, which varies from 10 to 50 nm as a result of coalescence. The content of the dispersed phase is 0.05% (mass), the refractive index of tetralin and water is 1.54 and 1.333, respectively.

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