MCQ
The minimum wavelength of $X-$ rays produced by electrons accelerated by a potential difference of volts is equal to
- A$\frac{{eV}}{{hc}}$
- B$\frac{{eh}}{{cV}}$
- ✓$\frac{{hc}}{{eV}}$
- D$\frac{{cV}}{{eh}}$
✓
Answer
Correct option: C.
$\frac{{hc}}{{eV}}$
c
(c) $E = eV = h{\nu _{\max }} = \frac{{hc}}{{{\lambda _{\min }}}}$
(c) $E = eV = h{\nu _{\max }} = \frac{{hc}}{{{\lambda _{\min }}}}$
$ \Rightarrow \,\,{\lambda _{\min }} = \frac{{hc}}{{eV}}$
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