NARS NATIONAL QUIZ COMPETITION
Authored by Oluebube Oduonye
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30 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which of the following is a measure of ionisation in air
Gray
Roentgen
Sievert
Becquerel
2.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which isotope is commonly used in nuclear medicine for gamma camera imaging
Iodine 131
Cobalt 60
Cesium 137
Technetium 99m
3.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which solid state device is found in x-ray detectors
Capacitors
Thermistors
Photodiode
Diodes
4.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
At electrostatic equilibrium, the electric field inside a conductor is
Zero
One
Infinite
Dependent on the external magnetic field
5.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
The Hvl and effective energy of an x-ray beam
Increase as the applied kv is increased
Increase with increase in Hvl
Increase as Ma increases
Decrease with increasing intensity
6.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
The y-axis of x-ray emission spectrum represents
Ma
Mas
Kev
LET
7.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which is responsible for the production of a latent image
Scatter radiation
Cathode rays
Residual photons
None of the above
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