When the operating voltage in an -X-ray tube is increased to 3 times the original value, the shortest wavelength shifts by 25 nm. Find the original value of the operating voltage.

Explanation

To find the original value of the operating voltage in the X-ray tube, we can follow these steps:

### Step 1: Understand the relationship between wavelength and voltage
The shortest wavelength (\( \lambda_{\text{min}} \)) emitted by an X-ray tube is inversely proportional to the operating voltage (V). The formula is given by:
\[ \lambda_{\text{min}} = \frac{12375}{V} \]
where \( \lambda_{\text{min}} \) is in angstroms and V is in volts.
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