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

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

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FT IR Spectroscopy
When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens?

The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
The nucleus spins faster
The processional frequency of the nucleus increases
None of these

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