The nature of the sun's spectrum is

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(A) The spectrum of the sun is a continuous spectrum that contains dark absorption lines known as Fraunhofer lines.These dark lines are caused by the

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Continuous spectrum with absorption lines

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(A) The spectrum of the sun is a continuous spectrum that contains dark absorption lines known as Fraunhofer lines.These dark lines are caused by the absorption of specific wavelengths of light by the cooler gases in the sun's outer atmosphere (photosphere and chromosphere).Therefore,the correct nature of the sun's spectrum is a continuous spectrum with absorption lines.

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