Question

Which of the following has the least penetrating power?

• A. Alpha particles
• B. Beta particles
• C. Gamma rays
• D. All have the same penetrating power

Answer 1

Answer:

A. Alpha particles

Radioactive rays are classified based on the behaviour of the radioactive rays in electric and magnetic fields. Three types: α rays, β rays, and γ rays. Alpha particles have the least penetrating power.