The potential difference applied to an X-ray tube is increased. A… - Vidyadip

MCQ

The potential difference applied to an $X$-ray tube is increased. As a result, in the emitted radiation

A
The intensity increases
B
The minimum wavelength increases
C
The intensity decreases
✓
The minimum wavelength decreases

✓

Answer

Correct option: D.

The minimum wavelength decreases

$\lambda_{\text {min }}=\frac{h c}{e V}$ or $\lambda_{\min } \propto \frac{1}{V}$ On increasing potential, $\lambda_{\text {min }}$ decreases.

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