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InterviewSolution
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Electrons with energy `80 keV` are incident on the tungsten target of an X - rays tube , k- shell electrons of tungsten have `72.5 keV` energy X- rays emitted by the tube contain onlyA. a continuos X-ray spectrum (Bremsstrablung) with a minimum wavelength of `-0.155 Å`B. a continuos X-ray spectrum (Bremsstrablung) all wavelengthsSC. a continuos X-ray spectrum of tungstenD. a continuos X-ray spectrum (Bremsstrablung) with a minimum wavelength of `-0.155 Å` and the charateristic X-ray spectrum of tungsten |
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Answer» Correct Answer - D As `lambda_(0) = (hc)/(E) = 1.55 xx 10^(-31) m` `:. lambda_(0) =0.155 Å` Which is the minimum wavelength of continuous X-rays which carry every equivalent electrons. Now, as the energy of incident radiation is more than of K-shell electrons, the characteristic X-ray appear as peaks on the continuous spectrum. |
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