Matter and Radiation Multiple Choice Questions
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Question 1 of 45
1. Question
Concerning the Compton effect:
(a) There is interaction between a photon and a free electron.
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Question 2 of 45
2. Question
Concerning the Compton effect:
(b) The larger the angle through which the photon is scattered, the more energy is loses.
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Question 3 of 45
3. Question
Concerning the Compton effect:
(c) The wavelength change produced depends upon the scattering material
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Question 4 of 45
4. Question
Concerning the Compton effect:
(d) High energy radiation is scattered more than lower energy radiation
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Question 5 of 45
5. Question
Concerning the Compton effect:
(e) The amount of scattering that occurs depends on the electron density of the scattering material
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Question 6 of 45
6. Question
The follow statements are true:
(a) all isotopes are radioactive
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Question 7 of 45
7. Question
The follow statements are true:
(b) k-shell binding energies increase as the atomic number increases
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Question 8 of 45
8. Question
The follow statements are true:
(c) if there are 6 protons and 6 neutrons in a given nucleus there will be 12 electrons in an atom of that material provided the atom is not ionised
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Question 9 of 45
9. Question
The follow statements are true:
(d) radioactive decay that leads to the emission of a positron always produces a nucleus of lower atomic number
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Question 10 of 45
10. Question
The follow statements are true:
(e) X-rays and gamma rays of a given energy interact in the same way in a low atomic number material
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Question 11 of 45
11. Question
The Compton interaction:
(a) results in giving energy to an electron
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Question 12 of 45
12. Question
The Compton interaction:
(b) is the most likely interaction to take place in the medical use of X-rays to take images
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Question 13 of 45
13. Question
The Compton interaction:
(c) probability increases in higher density materials
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Question 14 of 45
14. Question
The Compton interaction:
(d) and the photoelectric interaction can take place with any bound electron of an atom
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Question 15 of 45
15. Question
The Compton interaction:
(e) creates better contrast in X-ray images than the photoelectric interaction
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Question 16 of 45
16. Question
The quantity of X-ray photons emitted from an X-ray tube:
(a) depends upon the kV used
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Question 17 of 45
17. Question
The quantity of X-ray photons emitted from an X-ray tube:
(b) will be greater for a tungsten target than for a molybdenum target provided all other factors remain unchanged
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Question 18 of 45
18. Question
The quantity of X-ray photons emitted from an X-ray tube:
(c) via the Bremsstrahlung mechanism, will be doubled if the mA is halved and the kV doubled
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Question 19 of 45
19. Question
The quantity of X-ray photons emitted from an X-ray tube:
(d) depends on the size of the focal spot provided all other factors remain unchanged
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Question 20 of 45
20. Question
The quantity of X-ray photons emitted from an X-ray tube:
(e) depends upon the degree of filtration
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Question 21 of 45
21. Question
The total linear attenuation coefficient
(a) is the fractional reduction in energy per unit thickness
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Question 22 of 45
22. Question
The total linear attenuation coefficient
(b) is equal to the mass attenuation coefficient multiplied by density
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Question 23 of 45
23. Question
The total linear attenuation coefficient
(c) is measured in units of 1/m
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Question 24 of 45
24. Question
The total linear attenuation coefficient
(d) depends upon density
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Question 25 of 45
25. Question
The total linear attenuation coefficient
(e) of cortical bone tissue shows a smaller change in value compared to that of muscle tissue over the range 10 keV to 50 keV
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Question 26 of 45
26. Question
Regarding atoms and their constituent parts:
(a) The nucleus of an atom is positively charged
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Question 27 of 45
27. Question
Regarding atoms and their constituent parts:
(b) All electrons in an atom have an equivalent energy
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Question 28 of 45
28. Question
Regarding atoms and their constituent parts:
(c) K-shell electron binding energies increase with increasing atomic number
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Question 29 of 45
29. Question
Regarding atoms and their constituent parts:
(d) A stable nucleus always has the same number of protons and neutrons
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Question 30 of 45
30. Question
Regarding atoms and their constituent parts:
(e) Isotopes of an element have the same atomic mass number
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Question 31 of 45
31. Question
Concerning the interactions of x-rays with matter:
(a) In the Compton effect, the photon interacts with a free electron
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Question 32 of 45
32. Question
Concerning the interactions of x-rays with matter:
(b) In the Compton effect, the photon always scatters through less than 45⁰
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Question 33 of 45
33. Question
Concerning the interactions of x-rays with matter:
(c) The photoelectric effect results in the ejection of a photoelectron
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Question 34 of 45
34. Question
Concerning the interactions of x-rays with matter:
(d) The photoelectric effect can result in the emission of a characteristic x-ray
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Question 35 of 45
35. Question
Concerning the interactions of x-rays with matter:
(e) At energies greater than 50keV, the Compton effect is predominant over the photoelectric effect in soft tissue
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Question 36 of 45
36. Question
Regarding the filtration of a diagnostic x-ray tube:
(a) The total filtration must be equivalent to at least 2.5 mm of Aluminium
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Question 37 of 45
37. Question
Regarding the filtration of a diagnostic x-ray tube:
(b) Adding filtration to the tube will have no effect on the Half Value Layer (HVL)
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Question 38 of 45
38. Question
Regarding the filtration of a diagnostic x-ray tube:
(c) Reducing the filtration will reduce the intensity of the x-ray beam
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Question 39 of 45
39. Question
Regarding the filtration of a diagnostic x-ray tube:
(d) Adding filtration to the tube will reduce the peak photon energy in the x-ray beam
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Question 40 of 45
40. Question
Regarding the filtration of a diagnostic x-ray tube:
(e) It is common for additional filtration to be made of Copper or Tantalum
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Question 41 of 45
41. Question
Regarding radioactive transformation:
(a) Alpha particle emission results in a reduction in atomic number
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Question 42 of 45
42. Question
Regarding radioactive transformation:
(b) Electron capture results in an increased atomic mass
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Question 43 of 45
43. Question
Regarding radioactive transformation:
(c) Gamma ray emissions can only be at specific energies for any given radionuclide
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Question 44 of 45
44. Question
Regarding radioactive transformation:
(d) Isometric transition is the mechanism through which an excited nucleus emits a gamma ray and returns to the ground state
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Question 45 of 45
45. Question
Regarding radioactive transformation:
(e) Following Beta emission, the atomic number of the radionuclide increases
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