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  • Electrons with energy are incident on the tungsten target of an x-ray tube. k - shell

Electrons with energy 80 ~\mathrm{keV}are incident on the tungsten target of an x-ray tube. k - shell electrons of tungsten have 72.5 ~\mathrm{kev} energy. X-rays emitted by the tube contain only -
 

Option: 1

 a continuous x-ray spectrum with a minimum wavelength of  \approx 0.155 \AA^{\circ}
 


Option: 2

 a continuous x-ray spectrum with all wave lengths.
 


Option: 3

 the characteristics x-ray spectrum of tungsten:
 


Option: 4

 a continuous x-ray spectrum of tun - gsten with wavelength \approx 0.155 \AA


Answers (1)

best_answer

\mathrm{ \lambda_{\min }(\operatorname{in} \dot{A})=\frac{12375}{E(\mathrm{ev})}}
\mathrm{ but ~E=80 \mathrm{kV}=80 \times 10^3 \mathrm{eV}}
\mathrm{\therefore \quad \lambda_{\min }(\operatorname{in} A)=\frac{12375}{80 \times 10^3}=0.155}

Posted by

manish painkra

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