Physics 2 HW 4-6B Flashcards
For a given energy beam, the penetration ______ with ______ atomic number.
A. Decreases, lower
B. Increases, Lower
C. Increases, Increases
D. Decreases, decreases
B. Increases, Lower
Which of the following decreases x-ray quality?
A. Increasing Kvp
B. Increasing mAs
C. All answers are correct
D. Decreasing filtration
D. Decreasing Filtration
Which of the following does NOT affect x-ray quality?
A. None of the answers B. All of the answers C. filtration D. mAs E. Kvp
D. mAs
When we describe the attenuation of x-ray as being exponential, we mean that for each unit of thickness of material they are
A. None of the answers
B. Attenuated by a constant percentage or proportion
C. They are attenuated by one half value layer
D. Preferentially attenuated at the lower energies
B. Attenuated by a constant percentage or proportion
With respect to a 15 MV x-ray beam, what is true about a 6 MV x-ray beam>
A. The 6 MV beam is higher quality
B. The 15 MV beam has a higher quality
C. The 6 MV beam is attenuated more rapidly
D. The 6 MV beam has more penetration
C. The 6 MV beam is attenuated more rapidly
Check the box for each parameter below that affects beam quality
A. Distance B. Total Charge of collected C. KVP D. Current E. Filtration
C. KVP and E. Filtration
Increasing filtration to an x-ray beam will decrease the
A. Quality of the beam
B. Maximum energy of the beam
C. Quantity of x-rays in the beam
D. Most probable energy of the beam
C. Quantity of x-ray in the beam
For the given data, what is the half value layer of the beam
Absorbed thickness Reading
0 60
3.0 50
6.4 44
9.8 35
13.1 30
16.2 24
19.2 21
25.5 16
28.8 13
13.1 is the answer
When waves seem to bend around an obstacle (such as waves around a wall) what is this called
A. Diffraction
B. None of the above
C. Refraction
D. Reflection
A. Diffraction
When white light displays as a band of colors after passing through a prism, this is an example of
A. Diffraction
B. Dispersion
C. Refraction
D. Reflection
C. Refraction
When waves bounces off the surface of a barrier this is called
A. Diffraction
B. None of the above
C. Refraction
D. Reflection
D. Reflection
The intensity of electrons created by photoelectric production can be increased by
A. Decreasing the wavelength of the photons
B. All of the answers are right
C. Increasing the number of photons
D. Increasing the frequency of the photons
C. Increasing the number of photons
What is the energy of a photon beam if the frequency is 4.25 x 10(23) hertz?
H= 4.15 x 10(15) eVs
A. 1.76 Mev
B. 176 kev
C. 1.76 Gev
D. 176 MeV
C. 1.76 GeV
The double slit experiment is an example of how sub atomic particles
A. Diffuse at the interface of two media
B. Refract at the interface of two media
C. Behave like waves
D. Interact with fluid media
C. Behave like waves
When sub atomic particles are directed at a small single slit, the resulting distribution is
A. A pattern of wave interference
B. A pattern of two bunches
C. A single bunch pattern
D. A pattern of three bunches
C. A single bunch pattern
Food is commonly heated with microwaves. Why are radio waves not used for heating food?
A. Radio waves require too large of an energy source
B. Radio waves are used for heating on an industrial scale
C. Electromagnetic energy reacts most with particles whose size is close to their wavelength
D. Radio waves energy is too low
C. EM energy reacts most with particles whose size is close to their wavelength
Increasing the energy of electromagnetic radiation is associated with
A. Decreasing penetration of the wave
B. Increasing wavelength
C. Increasing number of electrons created by photo nuclear reaction
D. Increasing frequency
D. Increasing frequency
Eisenstein’s theory of relatively shows that
A. Mass can be converted into energy
B. All answers are correct
C. Energy is related to mass
D. The speed of light is constant in a vacuum
All of the answers are correct
What type of interaction produces a photon of equal energy to the initial photon?
A. Photoelectric
B. Pair Production
C. Coherent
D. Compton
C. Coherent
Which type of radiation interaction is predominant at diagnostic radiographic energies
A. Photoelectric
B. Coherent
C. Pair Production
D. Compton
A. Photoelectric
Which of the following interactions does not result in complete absorption of the photon?
A. Photoelectric effect
B. Compton
C. Pair Production
D. Photodisintegration
B. Compton
With which type of electrons does the photoelectric interaction usually occur?
A. Inner shell electrons
B. Any electrons
C. Valence shell electrons
D. Free electron
A. Inner shell electrons
Which of the following is a possible product after photoelectron interactions?
A. Characteristic x-ray B. Scattered photon C. All answers are correct D. Auger electron E. Characteristic x-ray and Auger electron
E. Characteristic X-ray and Auger electron
Which type of photon interaction requires a photon of at least 1.02?
A. Coherent
B. Compton
C. Photoelectric
D. Pair Production
D. Pair production
Which type of photon interaction is NOT inversely proportional to the photon energy?
A. Photoelectric
B. Coherent
C. Pair Production
D. Compton
C. Pair Production
Photons are more likely to interact with matter which is
A. Low atomic numbers
B. At rest energy near the photon energy
C. Equal to the kinetic energy of the orbital electron
D. Similar in size to the wavelength of the photon
D. Similar in size to the wavelength of the photon
Which is true about Compton scattering
A. The incident photon energy is much greater than the binding energy of the electron
B. It is independent of the atomic mass
C. The photon is absorbed by the atom
D. The scattering photon gains energy
A. The incident photon energy is much greater than the binding energy of the electron
Which type of photon interaction is it when all the photon energy is given to the nucleus of the atom
A. Compton
B. Photoelectric
C. Coherent
D. Pair Production
D. Pair Production
