RADIATION PROTECTION IN MEDICAL
RADIOGRAPHY FINAL PAPER 2026 COMPLETE
QUESTIONS ANSWERS PREMIUM STUDY GUIDE
◉ Which of the following terms refers to the radiation that occurs
when an electron spontaneously drops down from an outer shell of
an ionized atom to fill a vacancy in an inner shell of that atom?
a. Characteristic photon, or characteristic x-ray
b. Bremsstrahlung
c. Photoelectric radiation
d. Primary radiation.
Answer: A
◉ Which of the following is not another term for coherent
scattering?
a. Characteristic
b. Classical
c. Elastic
d. Unmodified.
Answer: A
,◉ Which of the following particles is considered to be a form of
antimatter?
a. Electron
b. Positron
c. X-ray photon
d. Scattered x-ray photon.
Answer: B
◉ Compton scattering is synonymous with
a. coherent scattering.
b. incoherent scattering.
c. photoelectric absorption.
d. photodisintegration..
Answer: B
◉ What is the term for the number of x-rays emitted per inner-shell
vacancy during the process of photoelectric absorption?
a. Characteristic absorption
b. Classical gain
c. Fluorescent yield
d. Modified pair production.
Answer: C
,◉ Which of the following results in all-directional scatter?
a. Classical interaction
b. Coherent interaction
c. Photoelectric interaction
d. Compton interaction.
Answer: D
◉ Which of the following is essentially the sum total of air kerma
over the exposed area of the patient's body surface?
a. Absorbed dose
b. Dose area product
c. Effective dose
d. Equivalent dose.
Answer: B
◉ The whole-body TEDE regulatory limit for exposed personnel is
_____________ and ______________ for the general public.
a. 0.05 Sv; 0.001 Sv
b. 0.15 Sv; 0.015 Sv
c. 0.25 Sv; 0.025 Sv
d. 0.5 Sv; 0.1 Sv.
, Answer: A
◉ As the intensity of x-ray exposure of the air volume increases, the
number of electron-ion pairs produced
a. also increases.
b. decreases considerably.
c. decreases slightly.
d. remains the same..
Answer: A
◉ For x-ray and gamma ray photons with energies up to 3 million
electron volts (MeV), which of the following radiation quantities
may be defined as the measure of the total electric charge of one
sign, either all pluses or all minuses, per unit mass that these two
types of radiation generate in dry air at standard temperature and
pressure (760 mm Hg or 1 atmosphere at sea level and 22° C)?
a. Absorbed dose
b. Equivalent dose
c. Exposure
d. Collective effective dose.
Answer: C
◉ How is dose area product usually specified?
RADIOGRAPHY FINAL PAPER 2026 COMPLETE
QUESTIONS ANSWERS PREMIUM STUDY GUIDE
◉ Which of the following terms refers to the radiation that occurs
when an electron spontaneously drops down from an outer shell of
an ionized atom to fill a vacancy in an inner shell of that atom?
a. Characteristic photon, or characteristic x-ray
b. Bremsstrahlung
c. Photoelectric radiation
d. Primary radiation.
Answer: A
◉ Which of the following is not another term for coherent
scattering?
a. Characteristic
b. Classical
c. Elastic
d. Unmodified.
Answer: A
,◉ Which of the following particles is considered to be a form of
antimatter?
a. Electron
b. Positron
c. X-ray photon
d. Scattered x-ray photon.
Answer: B
◉ Compton scattering is synonymous with
a. coherent scattering.
b. incoherent scattering.
c. photoelectric absorption.
d. photodisintegration..
Answer: B
◉ What is the term for the number of x-rays emitted per inner-shell
vacancy during the process of photoelectric absorption?
a. Characteristic absorption
b. Classical gain
c. Fluorescent yield
d. Modified pair production.
Answer: C
,◉ Which of the following results in all-directional scatter?
a. Classical interaction
b. Coherent interaction
c. Photoelectric interaction
d. Compton interaction.
Answer: D
◉ Which of the following is essentially the sum total of air kerma
over the exposed area of the patient's body surface?
a. Absorbed dose
b. Dose area product
c. Effective dose
d. Equivalent dose.
Answer: B
◉ The whole-body TEDE regulatory limit for exposed personnel is
_____________ and ______________ for the general public.
a. 0.05 Sv; 0.001 Sv
b. 0.15 Sv; 0.015 Sv
c. 0.25 Sv; 0.025 Sv
d. 0.5 Sv; 0.1 Sv.
, Answer: A
◉ As the intensity of x-ray exposure of the air volume increases, the
number of electron-ion pairs produced
a. also increases.
b. decreases considerably.
c. decreases slightly.
d. remains the same..
Answer: A
◉ For x-ray and gamma ray photons with energies up to 3 million
electron volts (MeV), which of the following radiation quantities
may be defined as the measure of the total electric charge of one
sign, either all pluses or all minuses, per unit mass that these two
types of radiation generate in dry air at standard temperature and
pressure (760 mm Hg or 1 atmosphere at sea level and 22° C)?
a. Absorbed dose
b. Equivalent dose
c. Exposure
d. Collective effective dose.
Answer: C
◉ How is dose area product usually specified?
