ALMS- Radiation Safety Exam Most Recent exam COMPLETE (2026)
EXAM Questions and Answers (Verified Answers) (Latest Update 2026)
Graded A+
ALMS Radiation Safety Practice Exam —
1. What does ALARA stand for?
o A. As Low As Readily Available
o B. As Low As Reasonably Achievable
o C. As Large As Radiated Amount
o D. Always Limit All Radiation Access
Rationale: ALARA is the radiation safety principle aimed at minimizing exposure.
Filo+1
2. Which of the following is not one of the three cardinal principles of radiation protection?
o A. Time
o B. Distance
o C. Shielding
o D. Energy level
Rationale: The core principles are Time, Distance, and Shielding. Stuvia+1
3. According to the inverse square law, what happens to radiation intensity if you double the
distance from the source?
o A. It doubles
o B. It is cut in half
o C. It is reduced to one-quarter
o D. It stays the same
Rationale: Radiation intensity decreases with the square of the distance. Stuvia+1
4. Which radiation shielding material is most appropriate for beta particles?
o A. Lead
o B. Plexiglass / plastic
o C. Concrete
1
o D. Water
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EXAMPREPMASTER
, Rationale: Lower-Z materials (like plastic) absorb beta without producing much
bremsstrahlung. University of Southern Indiana
5. Which material is most effective for shielding gamma radiation?
o A. Paper
o B. Plexiglass
o C. Lead or other high-Z material
o D. Plastic alone
Rationale: Gamma rays are highly penetrating and require dense materials (like lead) for
effective shielding. University of Southern Indiana+1
6. What is the SI unit for measuring absorbed dose?
o A. Sievert
o B. Becquerel
o C. Gray
o D. Roentgen
Rationale: Gray (Gy) measures the energy deposited per unit mass. Online Exam Maker
7. What is the SI unit for measuring radioactivity (decays per second)?
o A. Gray
o B. Sievert
o C. Becquerel
o D. Roentgen
Rationale: The becquerel (Bq) measures the number of nuclear transformations per
second. Stuvia+1
8. Which of the following represents a stochastic effect of radiation exposure?
o A. Radiation burn
o B. Skin erythema
o C. Cancer induction
o D. Cataract formation
Rationale: Stochastic effects (like cancer) have no threshold and probability increases
with dose. Docsity
9. Who is typically responsible for enforcing the ALARA program in a hospital?
o A. Head nurse
o B. Chief Physician
o C. Radiation Safety Officer (RSO)
o D. Hospital Administrator
2
Rationale: The RSO oversees radiation protection programs. Stuvia
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EXAMPREPMASTER
, 10. In a radiation-controlled area, what practice helps minimize exposure?
o A. Wearing a lead apron only
o B. Restricting access, using shielding, and monitoring exposure
o C. Keeping all doors open
o D. Using no protective equipment
Rationale: Time, distance, and shielding plus controlled access limit exposure.
aerb.gov.in+1
11. If a worker’s dosimeter reading shows increasing exposure over time (but still under
regulatory limits), what should be done?
o A. No action required
o B. Investigate work practices and implement improvements
o C. Replace the worker’s badge
o D. Stop work permanently
Rationale: Consistently rising exposure suggests a need to review and optimize
procedures. Stuvia
12. For a radionuclide vial emitting gamma radiation, what is an effective way to minimize
technician dose?
o A. Use non-lead gloves
o B. Use remote handling tongs to increase distance
o C. Hold the vial close to the body
o D. Cover with paper
Rationale: Distance is very effective due to the inverse-square law. Atom Physics
13. Which radiation monitoring device is commonly used by personnel to measure
accumulated exposure?
o A. Geiger counter
o B. Personal dosimeter (film badge or TLD)
o C. Survey meter
o D. Thermometer
Rationale: Dosimeters record individual exposure over time. HSE Study Guide
14. What should you do if a patient asks how much radiation they will get from an X-ray?
o A. Change the subject
o B. Estimate by comparing to natural background radiation
o C. Refuse to tell them
o D. Lie to reassure them
Rationale: Comparing to background radiation helps patients understand relative risk.
3
Stuvia
Page
EXAMPREPMASTER
EXAM Questions and Answers (Verified Answers) (Latest Update 2026)
Graded A+
ALMS Radiation Safety Practice Exam —
1. What does ALARA stand for?
o A. As Low As Readily Available
o B. As Low As Reasonably Achievable
o C. As Large As Radiated Amount
o D. Always Limit All Radiation Access
Rationale: ALARA is the radiation safety principle aimed at minimizing exposure.
Filo+1
2. Which of the following is not one of the three cardinal principles of radiation protection?
o A. Time
o B. Distance
o C. Shielding
o D. Energy level
Rationale: The core principles are Time, Distance, and Shielding. Stuvia+1
3. According to the inverse square law, what happens to radiation intensity if you double the
distance from the source?
o A. It doubles
o B. It is cut in half
o C. It is reduced to one-quarter
o D. It stays the same
Rationale: Radiation intensity decreases with the square of the distance. Stuvia+1
4. Which radiation shielding material is most appropriate for beta particles?
o A. Lead
o B. Plexiglass / plastic
o C. Concrete
1
o D. Water
Page
EXAMPREPMASTER
, Rationale: Lower-Z materials (like plastic) absorb beta without producing much
bremsstrahlung. University of Southern Indiana
5. Which material is most effective for shielding gamma radiation?
o A. Paper
o B. Plexiglass
o C. Lead or other high-Z material
o D. Plastic alone
Rationale: Gamma rays are highly penetrating and require dense materials (like lead) for
effective shielding. University of Southern Indiana+1
6. What is the SI unit for measuring absorbed dose?
o A. Sievert
o B. Becquerel
o C. Gray
o D. Roentgen
Rationale: Gray (Gy) measures the energy deposited per unit mass. Online Exam Maker
7. What is the SI unit for measuring radioactivity (decays per second)?
o A. Gray
o B. Sievert
o C. Becquerel
o D. Roentgen
Rationale: The becquerel (Bq) measures the number of nuclear transformations per
second. Stuvia+1
8. Which of the following represents a stochastic effect of radiation exposure?
o A. Radiation burn
o B. Skin erythema
o C. Cancer induction
o D. Cataract formation
Rationale: Stochastic effects (like cancer) have no threshold and probability increases
with dose. Docsity
9. Who is typically responsible for enforcing the ALARA program in a hospital?
o A. Head nurse
o B. Chief Physician
o C. Radiation Safety Officer (RSO)
o D. Hospital Administrator
2
Rationale: The RSO oversees radiation protection programs. Stuvia
Page
EXAMPREPMASTER
, 10. In a radiation-controlled area, what practice helps minimize exposure?
o A. Wearing a lead apron only
o B. Restricting access, using shielding, and monitoring exposure
o C. Keeping all doors open
o D. Using no protective equipment
Rationale: Time, distance, and shielding plus controlled access limit exposure.
aerb.gov.in+1
11. If a worker’s dosimeter reading shows increasing exposure over time (but still under
regulatory limits), what should be done?
o A. No action required
o B. Investigate work practices and implement improvements
o C. Replace the worker’s badge
o D. Stop work permanently
Rationale: Consistently rising exposure suggests a need to review and optimize
procedures. Stuvia
12. For a radionuclide vial emitting gamma radiation, what is an effective way to minimize
technician dose?
o A. Use non-lead gloves
o B. Use remote handling tongs to increase distance
o C. Hold the vial close to the body
o D. Cover with paper
Rationale: Distance is very effective due to the inverse-square law. Atom Physics
13. Which radiation monitoring device is commonly used by personnel to measure
accumulated exposure?
o A. Geiger counter
o B. Personal dosimeter (film badge or TLD)
o C. Survey meter
o D. Thermometer
Rationale: Dosimeters record individual exposure over time. HSE Study Guide
14. What should you do if a patient asks how much radiation they will get from an X-ray?
o A. Change the subject
o B. Estimate by comparing to natural background radiation
o C. Refuse to tell them
o D. Lie to reassure them
Rationale: Comparing to background radiation helps patients understand relative risk.
3
Stuvia
Page
EXAMPREPMASTER
