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An X-ray photon scatters through 180° from (i) an electron
Chapter 30, Problem 56P(choose chapter or problem)
Problem 56P
An X-ray photon scatters through 180° from (i) an electron or (ii) a helium atom. (a) In which case is the change in wavelength of the X-ray greater? Explain. (b) Calculate the change in wavelength for each of these two cases.
Questions & Answers
QUESTION:
Problem 56P
An X-ray photon scatters through 180° from (i) an electron or (ii) a helium atom. (a) In which case is the change in wavelength of the X-ray greater? Explain. (b) Calculate the change in wavelength for each of these two cases.
ANSWER:
Step 1 of 2:-
a)
Here, we have to find in which case the change in wavelength is greater.
The x-ray scattered from an electron and also from a helium atom.
The change in wavelengths are,
And
As we know that, the mass of helium atom is greater than the electron, the change in electron wavelength will be greater.