Arab Board Radiology Part 1 Practice Questions - Arab Board Diagnostic Radiology Part 1 Written Exam (ABHS) Exam

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In a diagnostic X-ray tube, what is the primary source of the electrons that are accelerated toward the anode to produce X-rays?

Thermionic emission from the heated filament of the cathode Photoelectric absorption within the anode target Beta decay of the tungsten target material Ionisation of the air gap between cathode and anode

Correct Answer:

Thermionic emission from the heated filament of the cathode

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