If 10,000 V applied across an X- ray tube, what will be the ratio of de-Broglie wavelength of the incident electrons to the shortest wavelength of X- ray produced

Q: If 10,000 V applied across an X- ray tube, what will be the ratio of de-Broglie wavelength of the incident electrons to the shortest wavelength of X- ray produced (e/m of electron is 1.7 x 1011 C/Kg)

Ans: 0.1