First slide

Radio activity

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

Easy

A

$γ, α, β$
B

$α, β, γ$
C

$β, α, γ$
D

$β, γ, α$

Solution

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

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