A) a continuous X-ray spectrum (Bremsstrahlung) with a minimum wavelength of \[\text{0}\text{.155}\overset{\text{o}}{\mathop{\text{A}}}\,\]
B) a continuous X-ray spectrum (Bremsstrahlung) with all wavelengths
C) the characteristic X-ray spectrum of tungsten
D) a continuous X-ray spectrum (Bremsstrahlung) with a minimum wavelength of \[\text{0}\text{.155}\overset{\text{o}}{\mathop{\text{A}}}\,\]and the characteristic X-ray spectrum of tungsten..
Correct Answer: D
Solution :
[d] \[{{\lambda }_{\min }}=\frac{hc}{E}\text{ }\therefore {{\lambda }_{\min }}=\frac{12400}{80\times {{10}^{3}}}\overset{\text{o}}{\mathop{\text{A}}}\,=0.155\overset{\text{o}}{\mathop{\text{A}}}\,\] Energy of incident electrons is greater than the ionization energy of electrons in K-shell, the K-shell electrons will be knocked off. Hence, characteristic X-ray spectrum will be obtained.
You need to login to perform this action.
You will be redirected in
3 sec
