Question

The minimum wavelength of X-rays produced from an electron accelerated from V volt is:

• A. $\frac{eV}{hc}$
• B. $\frac{hc}{eV}$
• C. $\frac{ch}{eV}$
• D. $\frac{h}{V}$

Answer 1

Answer: (B)

If an electron is accelerated by potential difference V, then minimum wavelength of X-rays ${\lambda }_{\min }=\frac{hc}{eV}$ .