Which ONE of the following statements about the spectrum of X-rays is TRUE? (X) the continuous spectrum arises due to bremsstrahlung processes. (Y) the characteristic lines arise due to inner-shell processes. (Z) the cut-off wavelength is independent of the target material.
In the question all the three statements i.e. X,Y and z all are true.
(X) the continuous spectrum arises due to bremsstrahlung processes. - Continuous spectrum arises due to deceladecele of the electrons hitting the target. This type of radiation is called as bremsstrahlung .
(Y) the characteristic lines arise due to inner-shell processes. - The characteristic line is created when a hole in inner shell, created by a collision event,is filled by an electronic from higher energy shell.
(Z) the cut-off wavelength is independent of the target material. - The cut-off wavelength of continuous X-rays corresponds to maximum energy of electron in X-ray tube.
So all sentences are correct.
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