Answer : The correct option is, gamma rays
Explanation :
Penetration power : It is the movement of rays or the particles through an object.
That means the more the energy of a particle, the more will be the penetrating power.
The increasing order of the penetration power of alpha rays, beta rays, and gamma rays will be,
[tex]\text{Alpha rays}<\text{Beta rays}<\text{Gamma rays}[/tex]
The penetrating power of the alpha, beta and gamma rays varies differently.
- The alpha particles can be restricted by the paper.
- The beta particles can pass through the paper but it can not pass through the aluminum foil.
- The restriction or blocking of gamma rays is very difficult. It can be restrict or blocked only by concrete, lead, or other heavy shielding.
Hence, the gamma particles is stopped by lead.
