HMI101 2025/2026 Exam Questions and
Verified Answers | Already Graded A+
The x-ray Examination room is defined as a:
a. Hazardous area
b. Controlled area
c. Supervised area
d. Non-public area - 🧠ANSWER ✔✔b. Controlled area
The x-ray Control room is defined as a:
a. Hazardous area
b. Controlled area
c. Supervised area
,d. Non-public area - 🧠ANSWER ✔✔c. Supervised area
X-rays are a form of:
a. Electron radiation
b. Electromagnetic radiation
c. Heat radiation
d. Nuclear radiation - 🧠ANSWER ✔✔b. Electromagnetic radiation
X-ray diagnostic radiation has energy:
a. 1.9 - 4 ev
b. 13.6 eV
c. 25 - 140 keV
d. 0 - 150 keV - 🧠ANSWER ✔✔c. 25 - 140 keV
X-ray radiation intensity:
a. Increases linearly with distance
b. Increases as the square of distance
c. Decreases linearly with distance
,d. Decreases as the inverse square of distance - 🧠ANSWER ✔✔d.
Decreases as the inverse square of distance
What is the maximum photon energy of a Bremsstrahlung spectrum of 90
kVp:
a. 90 kVp
b. 90 keV
c. 30 kVp
d. 30 keV - 🧠ANSWER ✔✔b. 90 keV
What is the average photon energy of a Bremsstrahlung spectrum of 90
kVp:
a. 90 kVp
b. 90 keV
c. 30 kVp
d. 30 keV - 🧠ANSWER ✔✔d. 30 keV
If the Tissue Weighting Factor of the Chest is approx 0.5, and a chest x-ray
gives an Absorbed Dose of 50uGy to the chest, what is the Effective Dose:
a. 25 uGy
3
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STATEMENT. ALL RIGHTS RESERVED
, b. 25 uSv
c. 50 uSv
d. 50 uR - 🧠ANSWER ✔✔b. 25 uSv
What is x-ray attenuation? - 🧠ANSWER ✔✔The decrease in intensity as X-
rays pass through matter, due to scattering of photons of absorption.
What is HVL? - 🧠ANSWER ✔✔HVL (half-value-layer) of an x-ray beam is
the thickness of absorbing material necessary to reduce the x-ray intensity
to half (50%) of its original value
What causes tissue contrast in an x-ray image? - 🧠ANSWER ✔✔Density
differences
What is the process which produces a continuous X-ray spectrum:
a. Thermionic emmission
b. Electromagnetic Induction
c. Bremsstrahlung
d. Attenuation - 🧠ANSWER ✔✔c. Bremsstrahlung
What is the process which rotates the Anode:
Verified Answers | Already Graded A+
The x-ray Examination room is defined as a:
a. Hazardous area
b. Controlled area
c. Supervised area
d. Non-public area - 🧠ANSWER ✔✔b. Controlled area
The x-ray Control room is defined as a:
a. Hazardous area
b. Controlled area
c. Supervised area
,d. Non-public area - 🧠ANSWER ✔✔c. Supervised area
X-rays are a form of:
a. Electron radiation
b. Electromagnetic radiation
c. Heat radiation
d. Nuclear radiation - 🧠ANSWER ✔✔b. Electromagnetic radiation
X-ray diagnostic radiation has energy:
a. 1.9 - 4 ev
b. 13.6 eV
c. 25 - 140 keV
d. 0 - 150 keV - 🧠ANSWER ✔✔c. 25 - 140 keV
X-ray radiation intensity:
a. Increases linearly with distance
b. Increases as the square of distance
c. Decreases linearly with distance
,d. Decreases as the inverse square of distance - 🧠ANSWER ✔✔d.
Decreases as the inverse square of distance
What is the maximum photon energy of a Bremsstrahlung spectrum of 90
kVp:
a. 90 kVp
b. 90 keV
c. 30 kVp
d. 30 keV - 🧠ANSWER ✔✔b. 90 keV
What is the average photon energy of a Bremsstrahlung spectrum of 90
kVp:
a. 90 kVp
b. 90 keV
c. 30 kVp
d. 30 keV - 🧠ANSWER ✔✔d. 30 keV
If the Tissue Weighting Factor of the Chest is approx 0.5, and a chest x-ray
gives an Absorbed Dose of 50uGy to the chest, what is the Effective Dose:
a. 25 uGy
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, b. 25 uSv
c. 50 uSv
d. 50 uR - 🧠ANSWER ✔✔b. 25 uSv
What is x-ray attenuation? - 🧠ANSWER ✔✔The decrease in intensity as X-
rays pass through matter, due to scattering of photons of absorption.
What is HVL? - 🧠ANSWER ✔✔HVL (half-value-layer) of an x-ray beam is
the thickness of absorbing material necessary to reduce the x-ray intensity
to half (50%) of its original value
What causes tissue contrast in an x-ray image? - 🧠ANSWER ✔✔Density
differences
What is the process which produces a continuous X-ray spectrum:
a. Thermionic emmission
b. Electromagnetic Induction
c. Bremsstrahlung
d. Attenuation - 🧠ANSWER ✔✔c. Bremsstrahlung
What is the process which rotates the Anode:
