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Fraunhofer spectrum is a
- a)Line absorption spectrum
- b)Band absorption spectrum
- c)Line emission spectrum
- d)Band emission spectrum
Correct answer is option 'A'. Can you explain this answer?
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Fraunhofer spectrum is aa)Line absorption spectrumb)Band absorption sp...
Fraunhofer lines, in astronomical spectroscopy, any of the dark (absorption) lines in the spectrum of the Sun or other star, caused by selective absorption of the Sun's or star's radiation at specific wavelengths by the various elements existing as gases in its atmosphere.
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Fraunhofer spectrum is aa)Line absorption spectrumb)Band absorption sp...
Line absorption spectrum:
- The Fraunhofer spectrum refers to a line absorption spectrum.
- Line absorption spectra are characterized by discrete lines or bands where light of specific wavelengths is absorbed by the substance being studied.
Explanation:
- When a beam of white light passes through a substance, certain wavelengths of light are absorbed by the atoms or molecules in the substance.
- The absorbed wavelengths correspond to the energy levels of the atoms or molecules, causing them to transition to higher energy levels.
- The remaining transmitted light produces a spectrum with dark lines at the absorbed wavelengths, creating a line absorption spectrum.
- The Fraunhofer spectrum specifically refers to the dark lines seen in the solar spectrum, first observed by Joseph von Fraunhofer in the early 19th century.
Significance:
- Line absorption spectra are crucial in identifying the elements present in a substance, as each element absorbs light at unique wavelengths.
- By analyzing the pattern of lines in a spectrum, scientists can determine the composition and properties of the substance under study.
Therefore, the Fraunhofer spectrum is a line absorption spectrum that plays a vital role in understanding the chemical composition and properties of various substances.
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Fraunhofer spectrum is aa)Line absorption spectrumb)Band absorption spectrumc)Line emission spectrumd)Band emission spectrumCorrect answer is option 'A'. Can you explain this answer?
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