Answer :
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Gamma-emission radiation is a high-energy form of electromagnetic radiation that requires heavy shielding to stop it effectively. Here are the materials that can stop gamma-emission radiation listed from least effective to most effective:
1. Paper: Paper is not effective in stopping gamma radiation as it is too thin and does not provide sufficient shielding.
2. Aluminum foil: Aluminum foil offers slightly better shielding compared to paper due to its denser composition, but it is still not effective enough to stop gamma radiation.
3. Plexiglas (acrylic): Plexiglas provides some shielding against gamma radiation due to its density, but it is not as effective as lead.
4. Lead: Lead is one of the most effective materials for stopping gamma-emission radiation due to its high density. Lead is commonly used in radiation shielding, such as in walls of radiation therapy rooms and protective clothing worn by professionals working with radioactive materials.
In summary, lead is the most effective material for stopping gamma-emission radiation, followed by Plexiglas, aluminum foil, and paper.
