Question:
An X-ray tube is operated at $1.24$ million volt. The shortest wavelength of the produced photon will be :
Correct Option: 1
Solution:
$\lambda_{\text {min }}=\frac{1240}{\Delta V}(\mathrm{~nm})$
$=\frac{1240}{1.24 \times 10^{6}}=10^{-3} \mathrm{~nm}$
Option (1) is correct.