Dental Radiography Review Exam 2026/2027 Actual
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Which of the following electrons has the greatest binding
energy? - Answer-K shell electrons
the K shell electron is located closest to the nucleus and
has the highest energy level and the greatest binding
energy. The M, N, and L shell electrons are located farther
from the nucleus.
What type of electrical charge does the electron carry? -
Answer-negative charge
Which term describes two or more atoms that are joined
by chemical bonds? - Answer-molecule
Which of the following describes ionization? - Answer-
Ionization is described as the production of ions when an
atom loses an electron
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Which term describes the process by which unstable
atoms undergo a spontaneous disintegration in an effort to
attain a more balance nuclear state? - Answer-radioactivity
Which of the following is NOT a type of particulate
radiation? - Answer-nucleons
Which of the following is NOT a type of electromagnetic
radiation? - Answer-electrons
Which of the following is a CORRECT statement? -
Answer-x-rays have more energy than visible light
Which of the following regulates the flow of electrical
current to the filament of - Answer-low-voltage circuit
Which of the following is used to increase the voltage in
the high-voltage circuit? - Answer-step-up transformer
The transformers either increase or decrease the voltage
in an electrical circuit; the step-up transformer increases
the incoming voltage to the level required.
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Which of the following is the location in which x-rays are
produced? - Answer-. positive anode
X-rays are produced at the anode that is the positive
electrode inside the x-ray tube.
Which of the following is the location in which thermionic
emission occurs? - Answer-negative cathode
Thermionic emission occurs at the cathode that is the
negative electrode inside the x-ray tube.
Which of the following accounts for 70% of all the x-ray
energy produced at the anode? - Answer-general radiation
Which of the following occurs only at 70 kVp or higher and
accounts for a very small part of the x-rays produced in
the dental x-ray machine? - Answer-characteristic
radiation
Which of the following describes primary radiation? -
Answer-radiation that exits the tubehead
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Which of the following describes scatter radiation? -
Answer-radiation that has been deflected from its path by
interaction with matter.
Radiation that has been deflected from its path by the
interaction with matter is scatter radiation.
Which of the following type of scatter occurs most often
with dental x-rays? - Answer-compton
A photographic image produced on film by the passage of
x-rays through teeth and related structures - Answer-
radiograph, dental
A beam of energy that has the power to penetrate
substances and record image shadows on photographic
film. - Answer-x ray
A form of energy carried by waves or a stream of particles
- Answer-radiation
Any person who positions, exposes, and processes x-ray
film - Answer-radiographer, dental