Oklahoma Dental Radiation Protection and Safety
Exam 2026/ 2027 Update – 500+ Verified Questions
and Answers | A+ Graded Study Material
Academic Year
Q: True or false, in an x-ray tube, the cathode is negative
Answer:
true
Q: Who discovered x-rays?
Answer:
Roentgen 1895
Q: True or false, background radiation only comes from natural resources
Answer:
false
1
,Q: Which particle has a negative charge?
Answer:
electron
Q: True or false, when making x-rays, electrons slam into the target on the cathode
Answer:
false
Q: What happens when x-rays pass through matter?
Answer:
ionization
Q: x-rays are:
Answer:
ionizing and electromagnetic
2
,Q: The quantity of the x-rays produced is controlled by:
Answer:
milliamerage
Q: An increase in kVp or mA will
Answer:
increase density
Q: True or false, high kVp produces hard x-rays
Answer:
true
Q: True or false, high kVp produces low energy
Answer:
false
3
, Q: True or false, high kVp produces lesser penetration
Answer:
false
Q: True or false, high kVp produces low contrast
Answer:
true
Q: Dental primary beams must be collimated to what diameter?
Answer:
2.75 in.
Q: Useless, low energy, long wavelength x-rays are also called
Answer:
soft x-rays
4
Exam 2026/ 2027 Update – 500+ Verified Questions
and Answers | A+ Graded Study Material
Academic Year
Q: True or false, in an x-ray tube, the cathode is negative
Answer:
true
Q: Who discovered x-rays?
Answer:
Roentgen 1895
Q: True or false, background radiation only comes from natural resources
Answer:
false
1
,Q: Which particle has a negative charge?
Answer:
electron
Q: True or false, when making x-rays, electrons slam into the target on the cathode
Answer:
false
Q: What happens when x-rays pass through matter?
Answer:
ionization
Q: x-rays are:
Answer:
ionizing and electromagnetic
2
,Q: The quantity of the x-rays produced is controlled by:
Answer:
milliamerage
Q: An increase in kVp or mA will
Answer:
increase density
Q: True or false, high kVp produces hard x-rays
Answer:
true
Q: True or false, high kVp produces low energy
Answer:
false
3
, Q: True or false, high kVp produces lesser penetration
Answer:
false
Q: True or false, high kVp produces low contrast
Answer:
true
Q: Dental primary beams must be collimated to what diameter?
Answer:
2.75 in.
Q: Useless, low energy, long wavelength x-rays are also called
Answer:
soft x-rays
4
