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ESSENTIALS OF RADIOGRAPHIC PHYSICS AND IMAGING, 3RD EDITION
QUESTIONS LATEST EDITION 2026 – 2027 VERSION SOLVED QUESTIONS
& ANSWERS
ESSENTIALS OF RADIOGRAPHIC PHYSICS AND IMAGING, 3RD EDITION
Complete Test Bank Questions with Answers & Rationales
Authors: James Johnston; Terri L. Fauber | ISBN: 9780323566681
Chapters 1–17 | Updated for 2025/2026 Testing Cycle
SECTION I: PRINCIPLES OF RADIATION PHYSICS
Chapter 01: Introduction to the Imaging Sciences (Questions 1–25)
Question 1: X-rays were discovered on which date?
A) November 8, 1805
B) November 8, 1875
C) November 8, 1895
D) November 8, 1985
Correct Answer: C
Rationale: X-rays were discovered by Wilhelm Conrad Roentgen on November 8, 1895.
This date is celebrated as International Day of Radiology.
Question 2: What material in Dr. Roentgen's laboratory fluoresced when the cathode
ray tube was energized?
A) Lead shielding covering the cathode ray tube
B) Barium platinocyanide
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C) The glass wall of the cathode ray tube
D) Photographic plates
Correct Answer: B
Rationale: A piece of cardboard covered with barium platinocyanide fluoresced when
the cathode ray tube was energized, leading Roentgen to investigate further and
ultimately discover x-rays.
Question 3: Where was Wilhelm Roentgen's laboratory located?
A) Wurzburg, Germany
B) Zurich, Switzerland
C) Paris, France
D) Boston, Massachusetts
Correct Answer: A
Rationale: Dr. Roentgen's laboratory was located at the University of Wurzburg in
Wurzburg, Germany, where he conducted the experiments that led to the discovery of x-
rays.
Question 4: The first radiograph produced by Dr. Roentgen was of:
A) His own left hand
B) His daughter's hand
C) His son's hand
D) His wife Bertha's hand
Correct Answer: D
Rationale: The first radiograph was taken December 22, 1895, of his wife Bertha's hand.
The image clearly showed her bones and her wedding ring.
Question 5: Exposure times for very early radiographs typically ranged from:
A) 1 second to 5 seconds
B) 1 minute to 15 minutes
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C) 20 minutes to 2 hours
D) 2 hours to 5 hours
Correct Answer: C
Rationale: Exposure times for early radiographs took from 20 minutes to 2 hours to
produce an image due to the low output of early x-ray tubes.
Question 6: Acute radiodermatitis was:
A) The radiation burn resulting from excessive exposure to x-rays
B) Common among early patients and operators of x-ray equipment
C) A delayed reaction to excessive x-ray exposure
D) All of the above
Correct Answer: D
Rationale: Early on, the excessive radiation exposure to many operators and patients
resulted in radiation burns, a delayed response to the exposure.
Question 7: Who brought attention to the dangers of x-rays?
A) Wilhelm Roentgen
B) Bertha Roentgen
C) Crookes
D) Thomas Edison
Correct Answer: D
Rationale: Thomas Edison, the famous American inventor, suffered a radiation burn
and brought attention to the dangers of x-rays.
Question 8: An example of how x-rays were used for entertainment or business gain in a
dangerous manner was the:
A) Fluoroscopic shoe fitter
B) X-ray stove polish
C) X-ray headache tablets
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D) X-ray golf balls
Correct Answer: A
Rationale: The fluoroscopic shoe fitter was used in shoe stores to measure feet for
proper shoe fitting, but it exposed customers to unnecessary radiation.
Question 9: Mass, length, and time are classified as:
A) Derived quantities
B) Fundamental quantities
C) Radiologic quantities
D) Electrical quantities
Correct Answer: B
Rationale: Mass, length, and time are the most basic or fundamental quantities from
which other quantities are derived.
Question 10: Velocity, acceleration, force, momentum, work, and power are classified
as:
A) Fundamental quantities
B) Derived quantities
C) Radiologic quantities
D) Atomic quantities
Correct Answer: B
Rationale: Along with force, momentum, and power, velocity, acceleration, and work
are derived from the fundamental quantities of mass, length, and time.
Question 11: Exposure, dose, dose equivalent, and radioactivity are classified as:
A) Fundamental quantities
B) Derived quantities
C) Radiologic quantities
D) Mechanical quantities
ESSENTIALS OF RADIOGRAPHIC PHYSICS AND IMAGING, 3RD EDITION
QUESTIONS LATEST EDITION 2026 – 2027 VERSION SOLVED QUESTIONS
& ANSWERS
ESSENTIALS OF RADIOGRAPHIC PHYSICS AND IMAGING, 3RD EDITION
Complete Test Bank Questions with Answers & Rationales
Authors: James Johnston; Terri L. Fauber | ISBN: 9780323566681
Chapters 1–17 | Updated for 2025/2026 Testing Cycle
SECTION I: PRINCIPLES OF RADIATION PHYSICS
Chapter 01: Introduction to the Imaging Sciences (Questions 1–25)
Question 1: X-rays were discovered on which date?
A) November 8, 1805
B) November 8, 1875
C) November 8, 1895
D) November 8, 1985
Correct Answer: C
Rationale: X-rays were discovered by Wilhelm Conrad Roentgen on November 8, 1895.
This date is celebrated as International Day of Radiology.
Question 2: What material in Dr. Roentgen's laboratory fluoresced when the cathode
ray tube was energized?
A) Lead shielding covering the cathode ray tube
B) Barium platinocyanide
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C) The glass wall of the cathode ray tube
D) Photographic plates
Correct Answer: B
Rationale: A piece of cardboard covered with barium platinocyanide fluoresced when
the cathode ray tube was energized, leading Roentgen to investigate further and
ultimately discover x-rays.
Question 3: Where was Wilhelm Roentgen's laboratory located?
A) Wurzburg, Germany
B) Zurich, Switzerland
C) Paris, France
D) Boston, Massachusetts
Correct Answer: A
Rationale: Dr. Roentgen's laboratory was located at the University of Wurzburg in
Wurzburg, Germany, where he conducted the experiments that led to the discovery of x-
rays.
Question 4: The first radiograph produced by Dr. Roentgen was of:
A) His own left hand
B) His daughter's hand
C) His son's hand
D) His wife Bertha's hand
Correct Answer: D
Rationale: The first radiograph was taken December 22, 1895, of his wife Bertha's hand.
The image clearly showed her bones and her wedding ring.
Question 5: Exposure times for very early radiographs typically ranged from:
A) 1 second to 5 seconds
B) 1 minute to 15 minutes
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C) 20 minutes to 2 hours
D) 2 hours to 5 hours
Correct Answer: C
Rationale: Exposure times for early radiographs took from 20 minutes to 2 hours to
produce an image due to the low output of early x-ray tubes.
Question 6: Acute radiodermatitis was:
A) The radiation burn resulting from excessive exposure to x-rays
B) Common among early patients and operators of x-ray equipment
C) A delayed reaction to excessive x-ray exposure
D) All of the above
Correct Answer: D
Rationale: Early on, the excessive radiation exposure to many operators and patients
resulted in radiation burns, a delayed response to the exposure.
Question 7: Who brought attention to the dangers of x-rays?
A) Wilhelm Roentgen
B) Bertha Roentgen
C) Crookes
D) Thomas Edison
Correct Answer: D
Rationale: Thomas Edison, the famous American inventor, suffered a radiation burn
and brought attention to the dangers of x-rays.
Question 8: An example of how x-rays were used for entertainment or business gain in a
dangerous manner was the:
A) Fluoroscopic shoe fitter
B) X-ray stove polish
C) X-ray headache tablets
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D) X-ray golf balls
Correct Answer: A
Rationale: The fluoroscopic shoe fitter was used in shoe stores to measure feet for
proper shoe fitting, but it exposed customers to unnecessary radiation.
Question 9: Mass, length, and time are classified as:
A) Derived quantities
B) Fundamental quantities
C) Radiologic quantities
D) Electrical quantities
Correct Answer: B
Rationale: Mass, length, and time are the most basic or fundamental quantities from
which other quantities are derived.
Question 10: Velocity, acceleration, force, momentum, work, and power are classified
as:
A) Fundamental quantities
B) Derived quantities
C) Radiologic quantities
D) Atomic quantities
Correct Answer: B
Rationale: Along with force, momentum, and power, velocity, acceleration, and work
are derived from the fundamental quantities of mass, length, and time.
Question 11: Exposure, dose, dose equivalent, and radioactivity are classified as:
A) Fundamental quantities
B) Derived quantities
C) Radiologic quantities
D) Mechanical quantities
