Find the frequency of 1 Mev photon. Given wavelength of a 1 Kev photon is 1.24*10-9 ? Pls ans asap
Find the frequency of 1 Mev photon. Given wavelength of a 1 Kev photon is 1.24*10-9 ?
Pls ans asap
Shivi . , 7 Years ago
Grade 12th pass
Modern Physics> Find the frequency of 1 Mev photon. Given...
1 Answers
Arun
Energy E = hν = hc/λ = 1 keV -----------(1)
Wavelength λ = 1.24 x 10-9 m -----------(2)
From (1) and (2), we get
hc = λ x 1 keV = 1.24 x 10-9 m x 1 keV = 1.24 x 10-9 m. 103 eV = 1.24 x 10-6 eV.m
If E = hc/λ = 1 MeV
1/λ = E/hc = 1 x 106 eV/(1.24 x 10-6 eV.m)
= 0.81 x 1012/m
Frequency ν = c/λ = (3 x 108 m/s) x 0.81 x 1012/m
= 2.43x 1020/s
= 2.43 x 1020 Hz.
Wavelength λ = 1.24 x 10-9 m -----------(2)
From (1) and (2), we get
hc = λ x 1 keV = 1.24 x 10-9 m x 1 keV = 1.24 x 10-9 m. 103 eV = 1.24 x 10-6 eV.m
If E = hc/λ = 1 MeV
1/λ = E/hc = 1 x 106 eV/(1.24 x 10-6 eV.m)
= 0.81 x 1012/m
Frequency ν = c/λ = (3 x 108 m/s) x 0.81 x 1012/m
= 2.43x 1020/s
= 2.43 x 1020 Hz.
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