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

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

ANSWER DOWNLOAD EXAMIANS APP

FT IR Spectroscopy
In scanning electron microscopy

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP