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AP Physics 2
15.3 Emission and Absorption Spectra
BeginnerMCQConceptual18.8k
Light with a continuous spectrum produced by the hot, dense core of a star passes through the cooler gas in the star's outer atmosphere before reaching an observer on Earth. When analyzed with a spectrometer, the observed light displays a continuous spectrum interrupted by thin, dark absorption lines. Which of the following best explains why these dark lines appear in the star's spectrum?

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