Q. Which of the following is accompanied by the characteristic $X$-ray emission
A) $\alpha$-particle emission
B) Electron emission
C) Positron emission
D) $K$-electron capture
Explanation
(d) Nucleus of heavy atom captures electron of $K$-orbit. This is a radioactive process, so vacancy of this electron is filled by an outer electron and $x$-rays are produce
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.