Q 12-11-009NEETNEET 2023Top questionEasy
The minimum wavelength of $X$-rays produced by an electron accelerated through a potential difference of $V$ volts is proportional to:
Answer: (B) $\dfrac{1}{V}$
The shortest wavelength is produced when the electron's entire kinetic energy $eV$ goes into one photon:
$$eV = \frac{hc}{\lambda_{min}} \;\Rightarrow\; \lambda_{min} = \frac{hc}{eV} \propto \frac{1}{V}$$
Solution by Sreeraj P, M.Sc Physics