X-rays are produced when -: (A) Electron beam strikes the nucleus of the atom, (B) Electron beam strikes the anode, (C) Electron beam reacts with the electromagnetic field, (D) Electron beam strikes the cathode
Answer is B. When electrons from cathode strikes the anode , X rays are produced but also there is large amount of heat production and hence tungsten having high melting point(3360c) used as a target material.