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) $\dfrac{1}{V}$
Concept. The shortest wavelength comes when the whole energy $eV$ goes into one photon.
Step 1. Relation. $eV = \dfrac{hc}{\lambda_{\min}} \Rightarrow \lambda_{\min} \propto \dfrac1V$.
Answer. $\dfrac1V$ (Option B).
Solution by Sreeraj P, M.Sc Physics