Asked by zoryana
what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?
Answers
Answered by
drwls
h*c/(wavelength) = E
= 10^4 eV*1.6*10^-19 J/eV
= 1.6*10^-15 J
You know what h and c are. Solve for the wavelength.
Wavelength = h*c/E
= 6.62*10^-34*3*10^8/1.6*10^-15
= 1.25*10^-10 m
= 0.125 nm = 1.25 Angstroms
The frequency is c/(wavelength)
= 10^4 eV*1.6*10^-19 J/eV
= 1.6*10^-15 J
You know what h and c are. Solve for the wavelength.
Wavelength = h*c/E
= 6.62*10^-34*3*10^8/1.6*10^-15
= 1.25*10^-10 m
= 0.125 nm = 1.25 Angstroms
The frequency is c/(wavelength)
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