The most penetrating radiations out of the following is that of:
Correct answer: A. γ-rays
- A. γ-rays
- B. α-particles
- C. β-rays
- D. X-rays
Explanation
Option A is correct because alpha particles have high ionization power but low penetrating power. Beta particles have low ionization power but high penetrating power compared to alpha particles. Gamma rays have the lowest ionization power but the highest penetrating power.
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About Radioactive Decay
Radioactive decay is the spontaneous transformation of unstable nuclei, described by decay constant, activity, half life and the exponential decay law. Work includes alpha, beta and gamma emissions, decay equations and remaining nuclei, with half life distinguished from the time required for complete decay.
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