MCQ
Let ${\lambda _\alpha }$, ${\lambda _\beta }$ and ${\lambda '_\alpha }$ denote the wavelengths of the $X-$ rays of the ${K_\alpha },\,{K_\beta }$ and ${L_\alpha }$ lines in the characteristic $X-$ rays for a metal
- A${\lambda _\alpha } > {\lambda '_\alpha } > {\lambda _\beta }$
- B${\lambda '_\alpha } > {\lambda _\beta } > {\lambda _\alpha }$
- ✓$\frac{1}{{{\lambda _\beta }}} = \frac{1}{{{\lambda _\alpha }}} + \frac{1}{{{{\lambda '}_\alpha }}}$
- D$\frac{1}{{{\lambda _\alpha }}} + \frac{1}{{{\lambda _\beta }}} = \frac{1}{{{{\lambda '}_\alpha }}}$
