Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________?
Correct answer: B. Range
- A. Trajectory
- B. Range
- C. Firing level
- D. Limit
Explanation
The range of an alpha particle is the average distance it travels through air before losing enough energy that its ionising ability effectively ceases. Trajectory describes its path, but not the distance over which the particle remains effective.
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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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