FT IR Spectroscopy
The frequency of precession, the transition frequency and the Larmor frequency are

different terms for the different frequency
different terms for the same frequency
same terms for the same frequency
same terms for the different frequency

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FT IR Spectroscopy
In FT-NMR, how are nuclei excited?

By radio-frequency radiation whose frequency is swept across a predetermined range
By an intense pulse of radiation which contains a wide range of frequencies
None of these
By an intense pressure

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FT IR Spectroscopy
What does the Michelson interferometer do?

Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector
Selectively filter certain wavelengths from a beam of I.R. radiation
Split a polychromatic beam of radiation into its component wavelengths
None of these

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