What number concentration of a fog comprised of 0.4um water droplets would be expected to result in a 50% extinction of a light beam with 520 nm wavelength over a distance of 1Okm
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Q: What signal is plotted above? (a) u(t) – u(-t) (b) u(-t) – u(t) (c) 2u(t) – u(-t) (d) u(-t) – 2u(t)
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