Q. For characteristic $X$-ray of some material
A) $E\left( K_{\gamma} \right) < E\left( K_{\beta} \right) < E(K_{\alpha})$
B) $E\left( K_{\alpha} \right) < E\left( L_{\alpha} \right) < E(M_{\alpha})$
C) $\lambda\left( K_{\gamma} \right) < \lambda\left( K_{\beta} \right) < \lambda(K_{\alpha})$
D) $\lambda\left( M_{\alpha} \right) < \lambda\left( L_{\alpha} \right) < \lambda(K_{\alpha})$
Explanation
(c) $\because E\left( K_{\gamma} \right) > E\left( K_{\beta} \right) > E\left( K_{\alpha} \right) \Rightarrow \lambda\left( K_{\gamma} \right) < \lambda\left( K_{\beta} \right) < \lambda(K_{\alpha})$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.