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  4. Penetrating power is minimum for:

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Q. Penetrating power is minimum for:

ManipalManipal 2002Nuclei

Solution:

As it is clear that penetrating power of $\alpha$-rays is few $cm$. While the penetrating power of $\beta, \gamma$, and X-ryas is in metre. Hence, the $\alpha$-rays has the minimum penetrating power.