Free Radioactive Decay MCQs with Answers
82 Radioactive Decay MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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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82 questions · page 5 of 5
- A. Decay constant
- B. Half life
- C. Mean life
- D. Activity
Explanation: The Becquerel (Bq) is the standard unit for measuring radioactivity, specifically the activity of a radioactive substance.
Correct answer: Activity- A. An α-particle
- B. A β-particle
- C. A γ-ray
- D. A neutron
Explanation: Aluminium-27 bombarded by an alpha particle gives phosphorus-30 plus a neutron.
Correct answer: A neutron