FT IR Spectroscopy
In scanning electron microscopy

a specimen is fixed and then coated with thin layer of a heavy metal
None of these
a specimen is fixed and then coated with transition metal
a specimen is not fixed and then coated with thin layer of a heavy metal

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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
None of these
The nucleus spins faster
The processional frequency of the nucleus increases

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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
None of these
By an intense pulse of radiation which contains a wide range of frequencies
By an intense pressure

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FT IR Spectroscopy
What does the Michelson interferometer do?

None of these
Split a polychromatic beam of radiation into its component wavelengths
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

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