Which one of the following atatement i9s `WRONG` in the context of X- rays generated from X- rays tube ?

Options

A. Wevelength of characteristic X- rays decrease when the atomic number of the target increase
B. cot - off wavelength of the contimous X - rays depends on the atomic number of the target
C. Intensity of the characteristic X -rays depend on the electrical power given to the X- rays tube
D. cut - off wavelength of the continous X- rays depends on the energy of the electrons in the X-rays tube

Answer

B

Explanation

The continous spectrum depends in the accelerating voltage it has a definite minimum wavelength .
Greater the accelerationg vollage for electron , bigher will be the kinetic energy if attains before striking the lorgest bigher will be the frequency of X- rays of continous will be the wavelength . The wavelength of continuous X- rays is indepndent of the atimic number of target matereial.