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Absorption & Emission Spectra Video Lecture | Chemistry for EmSAT Achieve

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FAQs on Absorption & Emission Spectra Video Lecture - Chemistry for EmSAT Achieve

1. What is absorption and emission spectra?
Ans. Absorption and emission spectra are two types of spectra that provide information about the energy levels of atoms or molecules. Absorption spectra show the wavelengths of light that are absorbed by a substance, while emission spectra show the wavelengths of light that are emitted by a substance.
2. How are absorption and emission spectra different?
Ans. Absorption spectra and emission spectra are different in terms of the information they provide. Absorption spectra show the wavelengths of light that are absorbed by a substance, indicating the energy levels of the atoms or molecules. On the other hand, emission spectra show the wavelengths of light that are emitted by a substance when it undergoes a transition from a higher energy level to a lower energy level.
3. How are absorption and emission spectra useful in scientific research?
Ans. Absorption and emission spectra are useful in scientific research because they provide valuable information about the energy levels and properties of atoms or molecules. Scientists can use these spectra to identify substances, study chemical reactions, determine the composition of celestial objects, and even analyze the health of living organisms.
4. What are the applications of absorption and emission spectra in everyday life?
Ans. Absorption and emission spectra have several applications in everyday life. For example, they are used in the development of new drugs, as scientists can analyze the absorption spectra of different compounds to understand their interactions with the body. Additionally, emission spectra are used in lighting technology, such as LED lights, to produce specific colors by controlling the wavelengths of light emitted.
5. How can absorption and emission spectra be measured?
Ans. Absorption and emission spectra can be measured using various techniques. One common method is spectrophotometry, which involves passing light through a sample and measuring the amount of light absorbed or emitted at different wavelengths. Another technique is fluorescence spectroscopy, which measures the emission of light after the sample has been excited by a different wavelength of light. These measurement techniques allow scientists to obtain detailed information about the absorption and emission properties of substances.
195 videos|213 docs|157 tests
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