Question

Arrange in increasing order of penetrating powers, considering each radiation particle has the same energy of 0.5MeV.

• A. α, β, γ
• B. α, γ, β
• C. β, γ, α
• D. γ, β, α

Answer 1

Answer: (A)

Penetrating power is maximum for γ - rays, then of β -particles and then α - particles because basically it depends on the velocity. However, ionization power is in reverse order.