Electrons with energy are incident on the tungsten target of an X-ray tube
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube. The K-shell electrons of tungsten have binding energy 72.5 keV. The X-rays emitted by the tube contain only
(1) A continuous X-ray spectrum (bremsstrahlung) with a minimum wavelength of approximately 0.155A˚
(2) A continuous X-ray spectrum (bremsstrahlung) with all wavelengths
(3) The characteristic X-ray spectrum of tungsten
(4) A continuous X-ray spectrum (bremsstrahlung) with a minimum wavelength of approximately 0.155A˚ and the characteristic X-ray spectrum of tungsten