X-rays with a
wavelength of 0.024 nm are scattered when they pass through a block of carbon.
The wavelength of the scattered photon is 24.567 pm. Calculate the scattering
angle and the kinetic energy of the electron after the elastic collision.

Data
:

1 eV = 1.6×10 -19 J ; h = 6.626×10 -34
J.s ; c = 3×10 8 m/s ;
m 0 = 9.109×10 -31 kg ; e =
1.6×10 -19 C

(Tick the right answer, 3 pts , 4 minutes )

Question

X-rays with a
wavelength of 0.024 nm are scattered when they pass through a block of carbon.
The wavelength of the scattered photon is 24.567 pm. Calculate the scattering
angle and the kinetic energy of the electron after the elastic collision.

Data
:

1 eV = 1.6×10 -19  J   ;   h = 6.626×10 -34 
J.s   ;   c = 3×10 8  m/s   ; 
 m 0  = 9.109×10 -31  kg   ;   e =
1.6×10 -19  C

(Tick the right answer,  3 pts  ,  4 minutes )

Answer

θ  = 90°    ;     E c  = 4.20 eV

Answer

θ  = 180°    ;     E c  = 294 eV

Answer

θ =
30°    ;     E c 
= 0.413 eV

Answer

θ  = 80°    ;     E c  =  2258.86  eV

Answer

θ  = 40°    ;     E c  = 1194.74 eV

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