LRA 211 FINAL EXAM Question and Answers [100% Correct] 2024/2025 Latest Version!!
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Course
LRA
Institution
LRA
LRA 211 FINAL EXAM Question and
Answers [100% Correct] 2024/2025
Latest Version!!
The first atomic model resembling a solar system layout is credited to
The three essential atomic particles include the
Rutherford.
neutron, electron, and proton.
The atomic nucleus consists ...
LRA 211 FINAL EXAM Question and
Answers [100% Correct] 2024/2025
Latest Version!!
The first atomic model resembling a solar system layout is credited to Rutherford.
The three essential atomic particles include the neutron, electron, and proton.
The atomic nucleus consists of protons and neutrons.
The positively charged, massive component in the nucleus is the proton.
The electron shell nearest to the nucleus is labeled "K".
Which of the following is excluded from the electromagnetic spectrum? Sound
Which type of electromagnetic radiation has the lowest energy? Radio waves
As frequency rises, the wavelength shortens.
Frequency is commonly measured in hertz.
The removal of an electron from an atom is called ionization.
X-rays are generated through rapidly moving electrons.
Which feature aids in cooling the x-ray tube inside the protective housing? Cooling fans and an oil
bath
1
, In x-ray tubes, the term envelope refers to the glass or metal enclosure.
The positive terminal of the x-ray tube is called the anode.
The negative terminal of the x-ray tube is known as the cathode.
The part of the envelope where x-rays exit is the target window.
The anode acts as a(n) target for electron interaction to produce x-rays, and also serves as an
electrical and thermal conductor.
The two anode configurations include stationary and rotating.
Tungsten coats the anode disc because it has a high atomic number.
In a rotating anode, the focal point becomes a focal track.
X-rays are generated by characteristic and bremsstrahlung interactions.
Upon entry into the anode target, filament electrons interact with outer shell electrons of
tungsten atoms.
When a K shell electron is displaced by a filament electron in tungsten, it produces a characteristic
x-ray photon.
The energy of a characteristic x-ray photon is influenced by the binding energy of the inner-shell
electron, the energy level of the filament electron, and the electron shell filling the vacancy.
2
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