To determine the minimum wavelength of the emitted X-ray radiation, we can use the equation:
minimum wavelength = (hc) / (eV)
Where: h = Planck's constant = 6.626 x 10^-34 J·s c = speed of light = 3 x 10^8 m/s e = electron charge = 1.6 x 10^-19 C V = voltage = 120 kV = 120,000 V
Let's substitute these values into the equation:
minimum wavelength = (6.626 x 10^-34 J·s * 3 x 10^8 m/s) / (1.6 x 10^-19 C * 120,000 V)
Calculating this expression gives us:
minimum wavelength = 2.48 x 10^-11 meters or 24.8 picometers
Therefore, the minimum wavelength of the emitted X-ray radiation is approximately 24.8 picometers.