MCQ
The minimum wavelength of $X$-rays produced by electrons accelerated by a potential difference of volts is equal to
- A$\frac{e V}{h c}$
- B$\frac{e h}{c V}$
- ✓$\frac{h c}{e V}$
- D$\frac{c V}{e h}$
✓
Answer
Correct option: C.
$\frac{h c}{e V}$
$E=e V=h v_{\max }=\frac{h c}{\lambda_{\min }} \Rightarrow \lambda_{\min }=\frac{h c}{e V}$
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