Q. The variation of wavelength $\lambda$ of the $K_{\alpha}$ line with atomic number $Z$ of the target is shown by the following curve of

A) $A$
B) $B$
C) $C$
D) None of these
Explanation

(c) For $K_{\alpha}$ line $v \propto (Z - 1)^{2} \Rightarrow \lambda \propto \frac{1}{(Z - 1)^{2}}$
$i.e.$ the graph between $\lambda$ and $z$ will be $(c)$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.