MCQ
Difference between $\lambda _{k_{\alpha}}$ and $\lambda _{min}$ become twice if accelerating potential changes from $3100\ volt$ to $12400\ volt$ . Find $\lambda _{k_{\alpha} }$ ........$\mathop A\limits^o $ (Given $hc = 12400\ eVÅ$ )


- A$6$
- B$5$
- ✓$7$
- D$5.5$


