A monochromatic source of light operation at 200 W emits 4 * 10^20 photons per second. Find the wavelength of the light ( in * 10^-7 m)

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A monochromatic source of light operation at 200 W emits 4 * 10^20 photons per second. Find the wavelength of the light ( in * 10^-7 m)
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Oct
A monochromatic source of light operation at 200 W emits 4 * 10^20 photons per second. Find the wavelength of the light ( in * 10^-7 m) A monochromatic source of light operation at 200 W emits 4 * 10^20 photons per second. Find the wavelength of the light ( in * 10^-7 m) October [...]
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