What do we see - atomic spectra or molecular spectra?
What is the nature of the absorber - diatomic, triatomic or polymer?
Whether this is absorption spectrum or emission spectrum?
What would we see if we use a monochromatic source like laser?
Why do we use an incandescent lamp?
What is the function of the grating? If we replace it with a prism, what will happen.
Only the 1st and 2nd orders of the diffraction pattern produced by the grating are visible. Can we get higher order patterns?
What do the dark lines signify in the observed spectra? Why are the dark lines never completely dark, unlike in the case of emission spectra?
if you observe that the horizontal levels of the spectra of different orders, as viewed by the telescope are not the same, what could be the problem?
Why is a separate bulb sometimes used to heat iodine?
What is the Franck-Condon principle?
Whether we see and electronic spectrum or not?
What is an anharmonic oscillator? Do you get any information about the anharmonic nature of the vibration of the molecule?
What is a dark band?
Explain Schuster's method.
Justify: We assume that the transitions always occur from the lowest vibrational level corresponding to the lower electronic level. However, the excitation can occur to any of the vibrational levels corresponding to the upper electronic level.
What are the selection rules involved?
What do you mean by dissociation energy?
What kind of spacing do you expect for the levels involved?