An X-ray tube uses a nickel plate (Z = 28) as the target. If the wavelength difference between the Ka line and the short wave cut-off wavelength of the continuous spectrum is equal to 84 pm, determine kVp of the X-ray tube (in the unit of kV). (5 marks) Express the values to 3 significant figures, if necessary.

B2. An Xray tube uses a nickel plate (Z = 28] as the target. If the wavelength difference between the K0: line and the short wave cut-off wavelength of the continuous spectrum is equal to 84 pm, determine kVp of the X-ray tube (in the unit of kV). (5 marks) Express the values to 3 signicant gures, if necessary