Question

α-particles. β-particles and γ-rays are all having same energy. Their penetrating power in a given medium in increasing order will be

(a) γ, α,  β

(b) α, β, γ

(c) β, α, γ

(d) β, γ, α

Answer 1

The correct option is (b) α, β, γ.

Explanation:

For a given energy, γ-rays has highest penetrating power and α-particles has least penetrating power.