Electrons with energy 80keV are incident on the tungsten target of an X – rays tube , k- shell electrons of tungsten have ionization energy 72.5 keV X – rays emitted by the tube contain only. Electrons with energy 80keV are incident on the tungsten target of an X - rays tube k- shell electrons of tungsten have ionization energy 72.5 keV X - rays emitted by the tube contain only. June 17, 2021 Category: Cengage NEET by C.P Singh , Chapter 13 - X Rays , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related