Question

If $v_{K_{\alpha }},v_{k_{\beta }},v_{L_{\alpha }}$ are the frequencies of $K_{\alpha },K_{\beta }$ and $L_{\alpha }$ x-rays espectively, then :

• A. $v_{k_{\alpha }}=v_{k_{\beta }}+v_{L_{\alpha }}$
• B. $v_{k_{\beta }}=v_{k_{\alpha }}+v_{L_{\alpha }}$
• C. $v_{k_{\beta }}=v_{L_{\alpha }}-v_{K_{\alpha }}$
• D. $v_{L_{\alpha }}=v_{k_{\beta }}+v_{K_{\alpha }}$

Answer 1

Answer: (B)

$v_{k_{\beta }}=v_{k_{\alpha }}+v_{L_{\alpha }}$

$V_{K\alpha }=\frac{E_K-E_L}{h}$
$V_{K_{\beta }}=\frac{E_K-E_M}{h}$
$V_{L_{\alpha }}=\frac{E_L-E_M}{h}$