Dental Radiography principals and Techniques 5th edition by Joen Iannucci
Dental Radiography principals and Techniques 5th edition by Joen Iannucci
$2.99
Chapter 02: Radiation Physics
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
MULTIPLE CHOICE
| a. | proton. |
| b. | neutron. |
| c. | electron. |
| d. | atom. |
ANS: D
A proton is a subatomic particle; the fundamental unit of matter is the atom. A neutron is a subatomic particle; the fundamental unit of matter is the atom. An electron is a subatomic particle; the fundamental unit of matter is the atom. The fundamental unit of matter is the atom.
DIF: Recall REF: Page 8 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | protons. |
| b. | neutrons. |
| c. | protons and neutrons. |
| d. | electrons. |
ANS: C
The nucleus of an atom contains neutrons as well as protons. The nucleus of an atom contains protons as well as neutrons. The nucleus of an atom contains protons and neutrons. The nucleus of an atom does not contain electrons; it contains protons and neutrons.
DIF: Recall REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | A neutron |
| b. | A proton |
| c. | An electron |
| d. | A nucleon |
ANS: C
A neutron does not carry an electrical charge. A proton carries a positive electrical charge. An electron carries a negative electrical charge. A nucleon carries a positive (proton) or no (neutron) electrical charge.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | Hydrogen (H #1) |
| b. | Helium (He #2) |
| c. | Nitrogen (N #7) |
| d. | Oxygen (O #8) |
ANS: A
Atomic numbers are assigned from simplest to most complex. Hydrogen is the simplest atom; with a single proton, it has an atomic number of 1. Helium has an atomic number of 2. Nitrogen has an atomic number of 7. Oxygen has an atomic number of 8.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics and radiobiology
| a. | Protons travel around the nucleus in well-defined shells. |
| b. | An atom contains innumerable shells. |
| c. | The energy level within each shell is the same. |
| d. | The orbiting shell closest to the nucleus has the highest energy level. |
ANS: D
Electrons travel around the nucleus in well-defined shells. An atom contains a maximum of seven shells. Each of the maximum seven shells within an atom represents a different energy level. The orbiting shell closest to the nucleus has the highest energy level. The K shell is the orbiting shell closest to the nucleus.
DIF: Comprehension REF: Page 8 OBJ: 2
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics and radiobiology
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