2023 Exam Questions 2024QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERSA GRADE
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Course
NU1426
Institution
NU1426
2023 Exam Questions 2024/QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS/A+ GRADE
The role of a fluorescent screen in fluoroscopy is:
Planar radiograph resolution DOES NOT depend on the:
X-rays passing through the absorber become harder if:
In the case of interaction of X rays (with energy...
2023 Exam Questions 2024/QUESTIONS WITH
CORRECT DETAILED AND VERIFIED ANSWERS/
A+ GRADE
1). The role of a fluorescent screen in fluoroscopy is:
Ans: decreasing the exposure
2). Planar radiograph resolution does not depend on the:
Ans: tube voltage
3). X-rays passing through the absorber become harder if:
Ans: X-rays are heterogeneous in energy and the absorber atomic nucleus is high
4). In the case of interaction of x rays (with energy e) and matter (atomic number z) the event
whose probability increases with increase of both parameters is:
Ans: pair production (pair creation)
5). ___icates are displayed on an ultrasound:
Ans:
6). Distance of a vertical incidence of an ultrasound wave at the boundary between two media,
the reflection is proportional to the:
Ans: the difference in acoustic impedance between the two media
7). Incorrect statement for the activity of a radioactive source is:
Ans: it is inversely proportional to the number of radioactive nuclei
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