RHS DALE FOUNDATION RADIATION
SAFETY EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
The shorter the wavelength of electromagnetic radiation, the greater the - ANS Energy
The penetrating x-ray beam made during dental radiography is called
s - ANS secondary radiation.
What measures the amount of radiation that reaches the surface of the skin? - ANS roentgen.
What may cause unnecessary radiation exposure to the patient? - ANS radiograph technique
errors
The annual maximum accumulated dose (MAD) of radiation for dental assistant is based on
which of the following calculations - ANS age minus 18 time 5rem/per year
Long-term effects of exposure to radiation may be associated with - ANS birth abnormalities
Added filtration in the x-ray tube head protects the - ANS patient
What prevents x-rays from escaping the tubehead? - ANS leaded glass housing
1 @COPYRIGHT 2026 ALLRIGHTS RESERVED.
, What effect can be caused when exposed to radiation? - ANS radiation can cause biological
damages
Which cells exposed to radiation may be associated with leukemia? - ANS somatic
Which three types of radiation protection methods should be used to minimize radiographer
exposure? - ANS barrier,moniter
Using a lead apron with a thyroid collar during dental radiographs protects the patient from -
ANS scatter radiation
If a dental assistant dosimeter badge report indicates exposure to radiation, what should be
done first? - ANS evaluate the x-ray equipment and techniques
What step should be taken immediately if the tube head drifts? - ANS stop using the machine
When changing the 8-inch PID to a 16-inch PID, what is used to determine the intensity of the
beam? - ANS inverse square law.
What must be monitored for radiation leakage? - ANS dental xray machines
According to the inverse square law, when changing the PID length from 8 to 16 inches, the
beam's intensity is - ANS 1/4 as intense
While exposing digital images, radiation deflecting off the patient's head is called -
ANS scatter radiation
Which landmark is useful when mounting images in the maxillary central area? - ANS anterior
nasal spine
2 @COPYRIGHT 2026 ALLRIGHTS RESERVED.
SAFETY EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
The shorter the wavelength of electromagnetic radiation, the greater the - ANS Energy
The penetrating x-ray beam made during dental radiography is called
s - ANS secondary radiation.
What measures the amount of radiation that reaches the surface of the skin? - ANS roentgen.
What may cause unnecessary radiation exposure to the patient? - ANS radiograph technique
errors
The annual maximum accumulated dose (MAD) of radiation for dental assistant is based on
which of the following calculations - ANS age minus 18 time 5rem/per year
Long-term effects of exposure to radiation may be associated with - ANS birth abnormalities
Added filtration in the x-ray tube head protects the - ANS patient
What prevents x-rays from escaping the tubehead? - ANS leaded glass housing
1 @COPYRIGHT 2026 ALLRIGHTS RESERVED.
, What effect can be caused when exposed to radiation? - ANS radiation can cause biological
damages
Which cells exposed to radiation may be associated with leukemia? - ANS somatic
Which three types of radiation protection methods should be used to minimize radiographer
exposure? - ANS barrier,moniter
Using a lead apron with a thyroid collar during dental radiographs protects the patient from -
ANS scatter radiation
If a dental assistant dosimeter badge report indicates exposure to radiation, what should be
done first? - ANS evaluate the x-ray equipment and techniques
What step should be taken immediately if the tube head drifts? - ANS stop using the machine
When changing the 8-inch PID to a 16-inch PID, what is used to determine the intensity of the
beam? - ANS inverse square law.
What must be monitored for radiation leakage? - ANS dental xray machines
According to the inverse square law, when changing the PID length from 8 to 16 inches, the
beam's intensity is - ANS 1/4 as intense
While exposing digital images, radiation deflecting off the patient's head is called -
ANS scatter radiation
Which landmark is useful when mounting images in the maxillary central area? - ANS anterior
nasal spine
2 @COPYRIGHT 2026 ALLRIGHTS RESERVED.
