Which of the following statement is correct ?

Intensity of X-rays depends upon the intensity of the bombarding electrons beam.

The upper limit of the frequency of continuous X-rays is not zero.

${\mathrm{\nu }}_{\max }=\frac{{\mathrm{m}}_{\mathrm{e}}{{\mathrm{v}}_{\mathrm{e}}}^2}{2\mathrm{h}}$ or, ${\mathrm{\nu }}_{\max }=\frac{{\mathrm{eV}}_0}{\mathrm{h}}$

Penetrating power of X-rays depends on operating voltage of the tube. Operating voltage increases the energy of the bombarding electrons which cause the emission of x-ray photons of larger energy. Higher energetic x-rays have larger penetration power.

Wavelength depends on accelerating voltage.

${\mathrm{\lambda }}_{\min }=\frac{\mathrm{hc}}{{\mathrm{eV}}_0}$