Q. Which of the following has the least penetrating power?
✅ Correct Answer: (A)
Alpha particles
Explanation: Gamma rays are the most penetrating of all the radiations. As penetrating depends on the size of particles, bigger the size lesser the penetration power and α particles are bigger in size followed by β and then γ. Also, γ rays are highly energetic waves having higher frequency.
Explanation by: Upesh
Gamma rays are the most penetrating of all the radiations. As penetrating depends on the size of particles, bigger the size lesser the penetration power and α particles are bigger in size followed by β and then γ. Also, γ rays are highly energetic waves having higher frequency.