Calculate the cutoff wavelength of the continuous X-rays produced by an X-ray tube operating at 30 kV .

Step-by-step solution

The cutoff wavelength of continuous X-rays is given by the Duane-Hunt law: _ min = hc eV Substituting the standard value hc 1242 eV nm and V = 30 kV = 30000 V : _ min = 1242 eV nm 30000 eV _ min = 0.0414 nm Since 1 nm = 1000 pm : _ min = 41.4 pm