An X-ray tube is
Question:

An X-ray tube is operated at $1.24$ million volt. The shortest wavelength of the produced photon will be :

1. $10^{-3} \mathrm{~nm}$

2. $10^{-1} \mathrm{~nm}$

3. $10^{-2} \mathrm{~nm}$

4. $10^{-4} \mathrm{~nm}$

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.