The wavelength of characteristic Kα-line emitted by a hydrogen like element is 2.5 Å. Find the wavelength of the Kγ-line emitted by the same element (in Å). [Assume the shielding effect to be same as of Kα]
Options

Question

The wavelength of characteristic Kα-line emitted by a hydrogen like element is 2.5 Å. Find the wavelength of the Kγ-line emitted by the same element (in Å). [Assume the shielding effect to be same as of Kα]

Options

G1 Physics · Accepted Answer

Step 1: For continuous X-rays use the Duane-Hunt relation λₘᵢₙ = hc/(eV). Step 2: For characteristic lines use the difference of shell binding energies or Moseley's law √ν ∝ (Z − b). Using the stated data gives C: 2.