a target is shielded from a radioactive sample by a sheet of metal. what kind of radiation can pass through…

a target is shielded from a radioactive sample by a sheet of metal. what kind of radiation can pass through the sheet of metal and hit the target?\ngamma rays only\ngamma rays and beta particles\nbeta particles only\nbeta particles and alpha particles
Answer
Brief Explanations:
- Alpha particles have low penetration power and can be stopped by a sheet of paper or a thin layer of metal.
- Beta particles have moderate penetration power and can be stopped by a few millimeters of metal.
- Gamma rays have high penetration power and can pass through several centimeters of metal.
Answer:
gamma rays only