Electromagnetic radiation provides a means to probe aspects of the physical universe. Which of the following statements regarding radiation spectra is NOT correct?
- Lines in the infrared, visible, and ultraviolet regions of the spectrum reveal primarily the nuclear structure of the sample.
- The wavelengths identified in an absorption spectrum of an element are among those in its emission spectrum.
- Absorption spectra can be used to determine which elements are present in distant stars.
- Spectral analysis can be used to identify the composition of galactic dust.
- Band spectra are due to molecules.
(GR0177 #64)
Solution:
The EM spectrum of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object.
EM spectrum can be used to determine the elements that compose the object, not the nuclear structure. (A) FALSE
Answer: A
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