TCDHA RAD MIDTERM 1 QUESTIONS AND ANSWERS 2025
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
, TCDHA RAD MIDTERM 1 QUESTIONS AND ANSWERS 2025
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)
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
, TCDHA RAD MIDTERM 1 QUESTIONS AND ANSWERS 2025
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)
