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MDCB REVIEW (QUESTIONS & ANSWERS) RATED 100% CORRECT!!
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MDCB REVIEW (QUESTIONS & ANSWERS) RATED 100% CORRECT!!
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MDCB REVIEW(QUESTIONS &
ANSWERS) RATED
100% CORRECT!!
MDCB
Evatee 9/5/24 MDCB
,MDCB REVIEW (QUESTIONS & ANSWERS)
RATED 100% CORRECT!!
Compton Scattering results in the ejection of an electron and....
A: A scattered Photon with a longer wavelength than the incident Photon
B: A scattered Photon with a shorter wavelength than the incident Photon
C: A scattered Photon with the same wavelength as an incident Photon
D: An equal sharing of the Photon energy by the electron and recoil nucleus
E: None of the above Answer - A: A scattered Photon with a longer wavelength
than the incident Photon
Which is not true about pair production?
A: The threshold energy is 1.02 MeV
B: An electron and positron are created
C: An example of energy mass conversion
D: Two photons are created
E: None of the above Answer - D: Two photons are created
Which of these statements is not true about positrons?
A: They annihilate when combined with electrons
B: They result from a pair production interaction
C: Their properties are identical to electrons except for their charge
D: After annihilation two 510 keV
E: None of the above Answer - D: After annihilation two 510 keV
,When tissue is oxygenated:
A: A higher dose is required for a given effect
B: DNA becomes radiation resistant
C: Cell death is less likely
D: More free radicals are formed Answer - D: More free radicals are formed
The unit of absorbed dose is the:
A: Rem/sievert
B: Rad/gray
C: roentgen
D: curie/becquerel Answer - B: Rad/gray
The accumulated dose limit (DL) for a technologist who is 26 years old is:
A: 16 mSv
B: 400 mSv
C: 260 mSv
D: 80 mSv Answer - C: 260 mSv
Age x 10
Board only looks for sieverts
Which of the following units is used when expressing Ionization in air?
A: Rad
B: roentgen
C: sievert
D: gray
E: becquerel Answer - B: roentgen
, Alpha particles are:
A: Composed of two protons and two neutrons
B: Are equivalent to a helium nuclei
C: Have a high linear energy transfer
D: All of the above Answer - D: All of the above
The average energy deposited per unit path length to a medium by ionizing
radiation as it passes through that medium best describes:
A: Linear energy transfer (LET)
B: Radiation absorbed dose (Rad)
C: Radiation equivalent man (Rem)
D: Tissue absorbed dose (TAR) Answer - A: linear energy transfer (LET)
Should you increase your distance from the source to three times the original,
your exposure would become:
A: 9 Times the original
B: 2 times the original
C: 1/9 the original
D: 1/2 the original Answer - C: 1/9 the original
This device is used for detection rather than measurement of radiation sources
and low level radioactive contamination.
A: Geiger Muller
B: Scintillation counter
C: TLD badge
D: PIC (pocket Ionization chamber) Answer - A: Geiger Muller
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