Physics - Current Electricity Question with Solution | TestHub

$\alpha$ particles are positively charged He nucleus, it can accept $2{\mathrm{e}}^{-},\beta$ rays are negatively charged which are similar to ${\mathrm{e}}^{-}$, can donate $1{\mathrm{e}}^{-},\gamma$ are radiations. Hence ionisation power of $\alpha$ is maximum. $\gamma$ are most energetic and $\propto$ is least energetic $\therefore$ Penetration power of $\gamma$ is maximum.