Q. The minimum wavelength of $X$-rays produced by electrons accelerated by a potential difference of $volts$ is equal to
A) $\frac{eV}{hc}$
B) $\frac{eh}{cV}$
C) $\frac{hc}{eV}$
D) $\frac{cV}{eh}$
Explanation
(c) $E = ev = hv_{\max} = \frac{hc}{\lambda_{\min}} \Rightarrow \lambda_{\min} = \frac{hc}{eV}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.