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Radiation Physics – MCQs with Answers (Volume 1) – Comprehensive Practice Material for Students and Exam Preparation

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This document contains a complete set of multiple-choice questions with answers covering fundamental and advanced topics in radiation physics. It includes material on atomic structure, radioactivity, X-ray production, interactions, dosimetry, LINAC physics, radiation protection, and QA procedures. The content is structured into clearly defined sections, making it suitable for exam revision and concept reinforcement. It provides a concise yet thorough overview aligned with typical academic and professional certification requirements.

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RADIATION PHYSICS MCQs + Answers
Volume 1

, SECTION A — FUNDAMENTALS OF ATOMS &
RADIOACTIVITY
1. Which of the following particles determines the atomic number of
an element?
A. Neutrons
B. Electrons
C. Protons
D. Nucleons
Answer: C

2. The mass number (A) of an atom represents:
A. Neutrons only
B. Protons + Neutrons
C. Electrons + Protons
D. Protons only
Answer: B

3. Radioactive decay that results in the emission of a helium nucleus
is:
A. Beta decay
B. Gamma emission
C. Alpha decay
D. Internal conversion
Answer: C

4. In β⁻ decay, which particle is emitted?
A. Positron
B. Electron
C. Neutron
D. Proton
Answer: B

5. The law describing decay over time is:
A. Beer-Lambert Law
B. Exponential Decay Law
C. Coulomb’s Law
D. Stefan-Boltzmann Law
Answer: B

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Subjects

  • mcqs radiation physics
  • x ray production
  • beam attenuation
  • half value layer
  • linac physics
  • radioactivity fundamentals

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