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An incandescent lightbulb is desired to emit at least 15 percent of its energy at wavelengths shorter than 08 mm Determine the minimum temperature to which the filament of the lightbulb must be heat

An incandescent lightbulb is desired to emit at least 15 percent of its energy at wavelengths shorter than 0.8 mm. Determine the minimum temperature to which the filament of the lightbulb must be heated.

2. The temperature of the filament of an incandescent lightbulb is 2500 K. Assuming the filament to be a blackbody, determine the fraction of the radiant energy emitted by the filament that falls in the visible range. Also, determine the wavelength at which the emission of radiation from the filament peaks.

Jul 23 2020 View more View Less

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