For characteristic `X` - ray of some material

In a characteristic X-ray spectra of some atom superimposed on continuous X-ray spectra :

In a characteristic X-ray spectra of some atom superimposed on continuous X-ray spectra :

Consider a photon of continuous X-ray and a photon of characteristic X-ray of the same wavelength. Which of the following is/are different for the two photons?

Consider a photon of continuous X-ray and a photon of characteristic X-ray of the same wavelength. Which of the following is/are different for the two photons?

Consider a photon of continuous X-ray and a photon of characteristic X-ray of the same wavelength. Which of the following is/are different for the two photons?

The graph that correctly represents the relation of frequency v of a particular characteristic X - ray with the atomic number Z of the material is

The graph that correctly represents the relation of frequency v of a particular characteristic X - ray with the atomic number Z of the material is

Write a note on characteristic x-ray spectra :