Because they have the shortest wavelengths
X-rays and Gamma rays are the two most penetrating rays in the electromagnetic spectrum.
Gamma rays are the most penetration rays because of its shortest wave length...
Gamma rays. They need layers of concrete and lead. They are also still not completely blocked.
Gamma rays are more penetrating than alpha and beta particles.
Of all the three types of radiation (alpha, beta and gamma), Gamma rays are the most penetrating, being able to travel through a few meters of lead.
Gamma rays are by far the most penetrating of the three types of radiation.
gamma rays
Gamma, i.e. photon emitted from the nucleus, has the highest penetrating power.
Gamma rays
Gamma rays .It can penetrate several cm of lead.
Because at their frequencies, each gamma ray photon has more energy than a photon of any other form of electromagnetic radiation.
Gamma rays.