Q. $K_{\alpha}$ and $K_{\beta}$ X-rays are emitted when there is a transition of electron between the levels
A) n=2 to n=1 and n=3 to n=1 respectively
B) n=2 to n=1 and n=3 to n=2 respectively
C) n=3 to n=2 and n=4 to n=2 respectively
D) n=3 to n=2 and n=4 to n=3 respectively
Explanation
(a) When the colliding electron remove an electron from innermost $k$-shell (corresponding to n=1) of atom and electron from some higher shell jumps to $k$-shell to fill up this vacancy, characteristic X-ray of $k$- series are obtained
$\therefore K_{\propto}\ $and $K_{\beta}$ X-rays are emitted when there is transition of electron between the levels n=2 to n=1 and n=3 to n=1 respectively.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.