RADR 1311: INTRODUCTION TO TECHNOLOGY LATEST EXAM QUESTIONS AND SOLUTIONS - VERIFIED ANSWERS 2026/2027

1. Who is credited with discovering X-rays?
A) Wilhelm Conrad Röntgen
B) Marie Curie
C) Thomas Edison
D) Nikola Tesla
Answer: A) Wilhelm Conrad Röntgen
2. In what year were X-rays discovered?
A) 1880
B) 1895
C) 1901
D) 1910
Answer: B) 1895
3. What did Röntgen name the new radiation?
A) Alpha rays
B) Gamma rays
C) X-rays
D) Cathode rays
Answer: C) X-rays
4. ARRT stands for:
A) American Registry of Radiologic Technologists
B) Association of Registered Radiologic Technicians
C) American Radiology and Radiation Therapy
D) American Registry of Radiologic Therapists
Answer: A) American Registry of Radiologic Technologists
5. The primary role of a radiologic technologist is to:
A) Diagnose disease
B) Perform radiographic examinations and produce diagnostic
images
C) Prescribe medications

, D) Perform surgery
Answer: B) Perform radiographic examinations and produce
diagnostic images
6. Marie Curie is known for her research on:
A) X-rays
B) Radioactivity
C) Ultrasound
D) MRI
Answer: B) Radioactivity
7. The first Nobel Prize in Physics was awarded to Röntgen in:
A) 1895
B) 1898
C) 1901
D) 1910
Answer: C) 1901
8. Which early pioneer developed the fluoroscope?
A) Röntgen
B) Edison
C) Curie
D) Coolidge
Answer: B) Edison
9. The Coolidge tube was introduced in:
A) 1895
B) 1913
C) 1930
D) 1945
Answer: B) 1913
10. Which organization sets the code of ethics for radiologic
technologists?
A) AMA
B) ASRT
C) ACR
D) JCAHO
Answer: B) ASRT
11. 'Scope of practice' for radiologic technologists refers to:

, A) The geographic area where they can work
B) The range of procedures they are trained and authorized to
perform
C) The number of patients they can see per day
D) Their salary range
Answer: B) The range of procedures they are trained and
authorized to perform
12. Which imaging modality uses sound waves?
A) CT
B) MRI
C) Ultrasound
D) Nuclear medicine
Answer: C) Ultrasound
13. Which imaging modality uses a magnetic field and radio
waves?
A) CT
B) MRI
C) PET
D) Fluoroscopy
Answer: B) MRI
14. Legislation most directly governing radiation in the workplace
includes:
A) OSHA Act
B) NRC regulations
C) State radiation control acts
D) All of the above
Answer: D) All of the above
15. The ASRT was founded in which year?
A) 1895
B) 1920
C) 1940
D) 1960
Answer: B) 1920
16. Which modality uses radioactive tracers administered to the
patient?
A) MRI

, B) CT
C) Nuclear medicine
D) Ultrasound
Answer: C) Nuclear medicine

Radiation Physics (22 questions)
17. X-rays are part of the:
A) Visible light spectrum
B) Electromagnetic spectrum
C) Acoustic spectrum
D) Particle radiation
Answer: B) Electromagnetic spectrum
18. X-rays travel at:
A) The speed of sound
B) Half the speed of light
C) The speed of light
D) Variable speeds
Answer: C) The speed of light
19. The relationship between wavelength and frequency is:
A) Directly proportional
B) Inversely proportional
C) No relationship
D) Exponential
Answer: B) Inversely proportional
20. Ionizing radiation is defined as radiation that:
A) Produces heat
B) Removes electrons from atoms
C) Produces visible light
D) Causes magnetic effects
Answer: B) Removes electrons from atoms
21. The photoelectric effect is primarily dependent on:
A) High kVp
B) Low atomic number of tissue
C) High atomic number of tissue and low kVp
D) Milliamperage