Ionization power and penetration range of radioactive radiation increases in the order

Question

Ionization power and penetration range of radioactive radiation increases in the order (A) λ, β, α and λ, β, α respectively (B) λ, β, α and α, β, λ respectively (C) α, β, λ and α, β, λ respectively (D) α, β, λ and λ, β, α respectively

Tardigrade Admin · Accepted Answer

Because of large mass and large velocity,

α

-particles have large ionising power. Each

α

-particle produces thousands of ions before being absorbed. The

β

-particles ionise the gas through which they pass, but their ionising power is only

\frac{1}{100}

th that of

α

-particles.

γ

-rays have got small ionising power.
Because of large mass, the penetrating power of

α

-particles is very small, it being

1/100

times that to

β

-rays and

1/10000

times that of

γ

-rays.

α

-particles can be easily stopped by an Aluminium sheet, only

0.02

mm thick.

β

-particles have very small mass, so their penetrating power is large.

γ

-rays have very large penetrating power.

Q. Ionization power and penetration range of radioactive radiation increases in the order

$λ, β, α an d λ, β, α$ respectively

$λ, β, α an d α, β, λ$ respectively

$α, β, λ an d α, β, λ$ respectively

$α, β, λ an d λ, β, α$ respectively

Q. Ionization power and penetration range of radioactive radiation increases in the order

λ,β,αandλ,β,α respectively

λ,β,αandα,β,λ respectively

α,β,λandα,β,λ respectively

α,β,λandλ,β,α respectively

$λ, β, α an d λ, β, α$ respectively

$λ, β, α an d α, β, λ$ respectively

$α, β, λ an d α, β, λ$ respectively

$α, β, λ an d λ, β, α$ respectively