Question

The distribution of energy in the continuous X-ray spectrum depends on

• A. The nature of the filament of the X-ray tube.
• B. The material of target.
• C. The order of vacuum inside the X-ray tube.
• D. The potential difference across the tube.

Answer 1

Answer: (D)

The potential difference across the tube.

The potential difference across the tube is used to accelerate the electrons, and thus it decides the amount of energy that the emitted radiation possess.
Using the equations

$E=\frac{hc}{\lambda }$

$E=eV$ and equating we get:

$\frac{hc}{\lambda }=eV$