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28.34. Set Up:
where
is the wavelength of the x ray and
V
is the accelerating voltage.
Solve:
28.35. Set Up:
Energy conservation gives
Solve:
28.36. Set Up:
The shift in wavelength of the photon is
where
is the wavelength
after the scattering and
The energy of a photon of wavelength
is
Conservation of energy applies to the collision, so the energy lost by the photon equals the
energy gained by the electron.
Solve: (a)
(b)
(c)
and
so the photon loses 300 eV of energy.
(d)
Energy conservation says the electron gains 300 eV of energy.
28.37. Set Up:
where
The energy of a photon of wave
length is
Conservation of energy applies to the collision, so the energy lost by the
photon equals the energy gained by the electron.
Solve: (a)
(b)
and
The photon loses 4 eV and the electron gains 4 eV.
Reflect:
The maximum possible increase in wavelength is
so the maximum
is
and this occurs at
The increase in wavelength specified in the problem is
less that the maximum allowed. Note that it is
not
correct to say that the energy gained by the photon is
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.
 Spring '07
 Shoberg
 Photon

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