Radiation Physics & Protection · NEET PG Preparation Radiology
During diagnostic X-ray production, what percentage of the kinetic energy of electrons striking the tungsten target is converted into X-ray photons,…
Practice question from Radiation Physics & Protection (NEET PG Preparation Radiology), with the correct answer and a step-by-step solution.
easy · MCQ · Q-229C9E
During diagnostic X-ray production, what percentage of the kinetic energy of electrons striking the tungsten target is converted into X-ray photons, with the remainder being dissipated as heat?
- A.Less than 1%Correct answer
- B.About 10%
- C.About 50%
- D.Greater than 90%
Solution
The efficiency of X-ray production is extremely low. Approximately 99% of the kinetic energy of the electrons is converted into heat within the target, and less than 1% (about 0.1-1% depending on the tube voltage) is converted into X-ray photons via bremsstrahlung and characteristic radiation.
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