Which one the following statement is wrong , in the context of X - rays generated from X - ray tube ?

Options

A. Wavelength of characteristic X-rays decreases when the atomic number of target increases
B. Cut-off wavelength of the continuous X-rays depends on the atomic number of the target
C. Intensity of the characteristic X-rays depends on the energy of the electron in the X-rays tube
D. Cut-off wavelengths of the continuous X-rays depends on the energy of the electrons in the X-rays tube

Answer

B

Explanation

As for continuous X-rays `lambda_("min")=(hc)/(eV)` so cut off wavelength depends on the accelerating potential and is independent of nature of target.