1.)What is the ratio between intensities for Rutherford scattering at 180 degree
ID: 2271928 • Letter: 1
Question
1.)What is the ratio between intensities for Rutherford scattering at 180 degrees compared to 1 degree?
a) 9.28E-8
b) 5.80E-9
c) 0
d) infinity
e) 115
2.) What is the energy of a photon emitted when an n=3 state decays to an n=1 state in hydrogen?
a) 13.6eV
b) 1.51eV
c) 3.4 eV
d) 9.2 eV
e) 12.1 eV
3.) A diffraction grating with groove spacing of 2 microns is used to observe the balmer series in hydrogen (transitions to the n=2 state) The bright cyan line has a wavelength of 486.1nm, At what angle will the first order cyan line appear?
a) 0 degrees
b) 0.139 degrees
c) 14.1 degrees
d) 29.1 degrees
e) no line seen with this grating
4.) What is the de Broglie wavelength of a 1 keV electron?
a) 1.02 nm
b) 0.0388 nm
c) 1.24 nm
d) 223 nm
e) 1.24 fm
Explanation / Answer
1.)What is the ratio between intensities for Rutherford scattering at 180 degrees compared to 1 degree?
a) 9.28E-8
b) 5.80E-9
c) 0
d) infinity
e) 115
2.) What is the energy of a photon emitted when an n=3 state decays to an n=1 state in hydrogen?
a) 13.6eV
b) 1.51eV
c) 3.4 eV
d) 9.2 eV
e) 12.1 eV
3.) A diffraction grating with groove spacing of 2 microns is used to observe the balmer series in hydrogen (transitions to the n=2 state) The bright cyan line has a wavelength of 486.1nm, At what angle will the first order cyan line appear?
a) 0 degrees
b) 0.139 degrees
c) 14.1 degrees
d) 29.1 degrees
e) no line seen with this grating
4.) What is the de Broglie wavelength of a 1 keV electron?
a) 1.02 nm
b) 0.0388 nm
c) 1.24 nm
d) 223 nm
e) 1.24 fm
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