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

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

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

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

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FT IR Spectroscopy
What is meant by rotating frame of reference?

That the sample is spun rapidly in the applied field
That the detector rotates around the sample
None of these
If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space

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