$(a)\;\alpha , \beta , \gamma\qquad(b)\;\beta , \gamma , \alpha\qquad(c)\;\alpha , \gamma , \beta \qquad(d)\;\gamma , \beta , \alpha$

Answer : (d) $\; \gamma , \beta , \alpha$

Explanation :

Penetrating power is maximum for $\;\gamma -\;$ rays then of $\;\beta - \;$ particles and then $\;\alpha -\;$ particles because basically it depends on velocity . However ionization power is in reverse order .

Alpha (α) radiation consists of a fast-moving helium-4 (4He) nucleus and is stopped by a sheet of paper.

Beta (β) radiation, consisting of electrons, can be halted by an aluminium plate.

Gamma (γ) radiation, consisting of energetic photons, can be absorbed only as it penetrates a dense material.

Ask Question

Tag:MathPhyChemBioOther

Take Test

...