Physics for IGCSE & O level - Atoms And Radioactivity (Section 2 - No. 20)
What is the relative penetrating power of alpha, beta, and gamma radiation?
Alpha > Beta > Gamma
Beta > Alpha > Gamma
Gamma > Beta > Alpha
Alpha = Beta = Gamma
Explanation
Gamma radiation is the most penetrating, followed by beta, and then alpha, which is the least penetrating.
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