Silicon has a band gap of 1.1 eV at room temperature.
(a) What wavelength of light would a photon of this energy correspond to?
(b) Draw a vertical line at this wavelength in the figure shown, which shows the light output of the sun as a function of wavelength. Does silicon absorb all, none, or a portion of the visible light that comes from the sun?

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Solar spectrum outside atmosphere Solar spectrum at sea level Ultravid 200 600 1400 1800 220026 3000 Wavelength (nm)