The Fraunhofer lines in the solar spectrum are actually:
A)emission lines from hot gases in the chromosphere of the Sun.
B)emission sections of the continuous spectrum of the photosphere.
C)Zeeman lines around sunspots due to their strong magnetic fields.
D)absorption lines due to the thin outer layer above the photosphere.
E)redshifted lines due to the Sun's rotation.

Question

Quizplus · Accepted Answer

Fraunhofer lines are dark absorption lines seen in the solar spectrum. They are caused by the absorption of specific wavelengths of light by elements in the thin, cooler outer layer of the Sun's atmosphere, called the chromosphere. This layer lies above the photosphere, which is the visible surface of the Sun that emits the continuous spectrum. Therefore, option D is the correct answer. The Fraunhofer lines are absorption lines in the solar spectrum caused by the outer layer of the sun's atmosphere, known as the chromosphere. When the light from the photosphere passes through this thin layer, certain wavelengths of light are absorbed by the gases in the chromosphere, leaving dark lines in the spectrum. This was first observed by Joseph von Fraunhofer in 1814, hence the name Fraunhofer lines.

The Fraunhofer Lines in the Solar Spectrum Are Actually