The strength line having a width line depends upon

(i)    Population of states with a particular energy in the initial state (called population density of that state)
(ii)    the strength of the incident radiation
(iii)    the probability that a transition will take place between the energy levels.

The probability of transitions decided by the “selection rules”. If the transitions allowed, a strong (or intense) spectral line will be obtained. If it is forbidden, no spectral line (or a weak spectral line) will be obtained.

Similarly, greater is the intensity of the incident radiation, greater is the rate at which the transition is induced and hence stronger is the adsorption by the sample.

Now we shall take up the study of the different types of spectra one by one.

For more help in R Intensity of The Spectral line click the button below to submit your homework assignment