TCDHA RAD 1 TEST LATEST 2025-2026 EXAM
UPDATE QUESTIONS AND ANSWERS
A form of energy carried by waves or streams of particles is defined as...
- Answer-Radiation
The x-ray was discovered by... - Answer-Wilhelm Roentgen
Who MODIFIED the paralleling technique with the introduction of the
long-cone technique? - Answer-F. Gordon Fitzgerald
Which of the following would you place in the patient's mouth in order
to take dental x-rays?
a) Image
b) Image Receptor
c) Radiograph
d) Dental radiograph - Answer-b. Image Receptor
Which subatomic particle carries a negative electrical charge?
a) A Neutron
b) A Proton
c) An Electron
d) A Nucleon - Answer-c. An Electron
, What is the binding energy or binding force of an electron is... -
Answer-Determined by the distance between the orbiting electrons and
the nucleus
A spontaneous emission of radiation from the disintegration of unstable
atomic nuclei is... - Answer-Radioactivity
Cathode rays are derived from which of the following types of
particulate radiation?
a. Electrons
b. Alpha Particles
c. Protons
d. alpha particle decay - Answer-a. Electrons
What type of radiation includes x-rays and visible light? - Answer-
Electromagnetic
Approximately what percentage of the kinetic energy of the electrons is
converted to x-rays at the anode? - Answer-Less than 1%
What restricts the size of the x-ray beam? - Answer-The Lead
Collimator
, Which form of the x-ray beam is more detrimental to the patient and
operator? - Answer-Scatter Radiation
What happens with the electrons when the kilovoltage is increased? -
Answer-The electrons moves from the CATHODE to the ANODE with
more speed
Higher-energy x-ray beam with increased penetrating ability results
by... - Answer-When the kilovolt is increased
(1) Density is the overall darkness or blackness of a dental image. (2)
When the kilovoltage is increased while other exposure factors remain
constant, the resultant image exhibits a decreased density and appears
lighter.
a. Both statement are true
b. Both statement are false
c. The first statement is true; the second statement is false - Answer-c.
The first statement is true; the second statement is false
What controls the quantity of x-rays produced? - Answer-
Milliamperage (mA)
In regard to increasing density: - Answer-An increase in either kVp or
mA will increase density.
UPDATE QUESTIONS AND ANSWERS
A form of energy carried by waves or streams of particles is defined as...
- Answer-Radiation
The x-ray was discovered by... - Answer-Wilhelm Roentgen
Who MODIFIED the paralleling technique with the introduction of the
long-cone technique? - Answer-F. Gordon Fitzgerald
Which of the following would you place in the patient's mouth in order
to take dental x-rays?
a) Image
b) Image Receptor
c) Radiograph
d) Dental radiograph - Answer-b. Image Receptor
Which subatomic particle carries a negative electrical charge?
a) A Neutron
b) A Proton
c) An Electron
d) A Nucleon - Answer-c. An Electron
, What is the binding energy or binding force of an electron is... -
Answer-Determined by the distance between the orbiting electrons and
the nucleus
A spontaneous emission of radiation from the disintegration of unstable
atomic nuclei is... - Answer-Radioactivity
Cathode rays are derived from which of the following types of
particulate radiation?
a. Electrons
b. Alpha Particles
c. Protons
d. alpha particle decay - Answer-a. Electrons
What type of radiation includes x-rays and visible light? - Answer-
Electromagnetic
Approximately what percentage of the kinetic energy of the electrons is
converted to x-rays at the anode? - Answer-Less than 1%
What restricts the size of the x-ray beam? - Answer-The Lead
Collimator
, Which form of the x-ray beam is more detrimental to the patient and
operator? - Answer-Scatter Radiation
What happens with the electrons when the kilovoltage is increased? -
Answer-The electrons moves from the CATHODE to the ANODE with
more speed
Higher-energy x-ray beam with increased penetrating ability results
by... - Answer-When the kilovolt is increased
(1) Density is the overall darkness or blackness of a dental image. (2)
When the kilovoltage is increased while other exposure factors remain
constant, the resultant image exhibits a decreased density and appears
lighter.
a. Both statement are true
b. Both statement are false
c. The first statement is true; the second statement is false - Answer-c.
The first statement is true; the second statement is false
What controls the quantity of x-rays produced? - Answer-
Milliamperage (mA)
In regard to increasing density: - Answer-An increase in either kVp or
mA will increase density.
