GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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absorption of corresponding wavelengths by the outer layers of the sun
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destructive interference between waves of certain definite wavelengths
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absorption of corresponding wavelengths by the prism used in the photograph
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absence of corresponding wavelengths from the light emitted by the core of the sun
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Detailed explanation-1: -It was correctly deduced that dark lines in the solar spectrum are caused by absorption by chemical elements in the solar atmosphere. Some of the observed features were identified as telluric lines originating from absorption by oxygen molecules in the Earth’s atmosphere.
Detailed explanation-2: -These dark lines found in the solar spectrum are known as the Fraunhofer lines. The solar spectrum is found to be an example of a line absorption spectrum.
Detailed explanation-3: -When the light leaves the surface of the Sun, it is very nearly a continuous spectrum. However, as it passes through the Sun’s atmosphere, gasses present in that atmosphere absorb specific wavelengths of light, leaving the pattern seen in the spectrum above.