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Astronomy
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In the solar spectrum, presence of D-line of the Fraunhofer lines prove that ________.
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A
there is no sodium in the outer surrrounding region of the sun
💡 Explanation:
The Fraunhofer D-lines are dark absorption lines in the solar spectrum caused by sodium in the sun's outer atmosphere (photosphere/chromosphere). These cooler layers absorb specific wavelengths, creating dark lines in the otherwise continuous spectrum.