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.

University Physics Volume 3
17th Edition
ISBN:9781938168185
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Chapter6: Photons And Matter Waves
Section: Chapter Questions
Problem 58P: The tungsten elements of incandescent light bulbs operate at 3200 K. At what frequency does the...
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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.

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