The short-wavelength limit shifts by 26 pm when the operating voltage in an X-ray tube is increased to 1.5 times the original value. What was the original value of the operating voltage?

Question

Philoid · Accepted Answer

Given:

Let be the initial wavelength, V be the initial potential

Hence, be the new wavelength and V’ be the new operating voltage

When the operating voltage of the X-ray tube is increased to 1.5 times

V- operating potential

Therefore the initial wavelength is

Now, the operating voltage V is given by