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Photon Intensity
3. (a) If light is generated by 2 sources with wavelengths equal to 350 nm and 900 nm, will
either one be absorbed by CdS? Explain your answer mathematically.
(b) Determine the absorption coefficient for CdS for a wavelength of 900 nm.
(c) What percentage of radiation is absorbed by 250 nm of CdS by light with this
wavelength (900 nm)?

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