Question

Name the radioactive radiations which have the least penetrating power.

Answer 1

1. Gamma rays are the most penetrating of all the radiations.
2. As penetration depends on particles’ size, the bigger the size lesser the penetration power, and α particles are bigger, followed by β.
3. Also, γ rays are highly energetic waves having a higher frequency.

Hence, alpha rays have the least penetrating power.