In which one of the following regions of the electromagnetic spectrum will the vibrational motion of molecules give rise to absorption?
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a
Ultraviolet
b
Microwaves
c
Infrared
d
Radio waves
answer is B.
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Detailed Solution
Molecular spectra due to vibrational motion lie in the microwave region of EM-spectrum. Due to Kirchhoff's law in spectroscopy the same will beabsorbed.