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LRA 211 Final Review Study Guide
Questions and Correct Answers
The earliest atomic theory based on an arrangement similar to the
solar system is attributed to Ans: Rutherford.
The three fundamental particles of the atom are the Ans: neutron,
electron, and proton.
The atomic nucleus contains Ans: protons and neutrons.
The component of the nucleus that has a positive charge and mass
is the Ans: proton.
The electron shell closest to the nucleus is lettered Ans: "K".
Which of the following is not part of the electromagnetic
spectrum? Ans: Sound
Which of the following electromagnetic radiations have the lowest
energy level? Ans: Radio waves
As the wave's frequency increases, the wavelength Ans: decreases.
Frequency is typically measured in Ans: hertz.
The process of removing an electron from an atom is Ans:
ionization.
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X-rays are produced Ans: using fast-moving electrons.
Which of the following helps to keep the x-ray tube cool on the
inside of the protective housing? Ans: Cooling fans and an oil
bath
In terms of the x-ray tube, envelope is another name for the Ans:
glass or metal enclosure.
The positive end of the x-ray tube is the Ans: anode.
The negative end of the x-ray tube is the Ans: cathode.
The area of the envelope where x-rays should exit the tube is the
Ans: target window.
The anode serves as a(n) Ans: target for the electron interaction to
produce x-ray, electrical conductor, heat conductor.
The two types of anode designs are stationary and Ans: rotating.
Tungsten is used to coat the anode disc because it Ans: has a high
atomic number.
With a rotating anode, the focal spot becomes a focal Ans: track.
X-rays are produced by Ans: characteristic and bremsstrahlung
interactions.
© 2025 All rights reserved
LRA 211 Final Review Study Guide
Questions and Correct Answers
The earliest atomic theory based on an arrangement similar to the
solar system is attributed to Ans: Rutherford.
The three fundamental particles of the atom are the Ans: neutron,
electron, and proton.
The atomic nucleus contains Ans: protons and neutrons.
The component of the nucleus that has a positive charge and mass
is the Ans: proton.
The electron shell closest to the nucleus is lettered Ans: "K".
Which of the following is not part of the electromagnetic
spectrum? Ans: Sound
Which of the following electromagnetic radiations have the lowest
energy level? Ans: Radio waves
As the wave's frequency increases, the wavelength Ans: decreases.
Frequency is typically measured in Ans: hertz.
The process of removing an electron from an atom is Ans:
ionization.
© 2025 All rights reserved
, 2 | Page
X-rays are produced Ans: using fast-moving electrons.
Which of the following helps to keep the x-ray tube cool on the
inside of the protective housing? Ans: Cooling fans and an oil
bath
In terms of the x-ray tube, envelope is another name for the Ans:
glass or metal enclosure.
The positive end of the x-ray tube is the Ans: anode.
The negative end of the x-ray tube is the Ans: cathode.
The area of the envelope where x-rays should exit the tube is the
Ans: target window.
The anode serves as a(n) Ans: target for the electron interaction to
produce x-ray, electrical conductor, heat conductor.
The two types of anode designs are stationary and Ans: rotating.
Tungsten is used to coat the anode disc because it Ans: has a high
atomic number.
With a rotating anode, the focal spot becomes a focal Ans: track.
X-rays are produced by Ans: characteristic and bremsstrahlung
interactions.
© 2025 All rights reserved
