Moderate
Which of the following electromagnetic radiation has the highest penetrating power?
Correct answer: C. Gamma rays
- A. Alpha rays
- B. Beta rays
- C. Gamma rays
- D. Proton rays
Explanation
Gamma rays - Correct: Gamma rays are highly penetrating and require thick lead or concrete shielding to stop them.
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About Nuclear Physics
Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
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