Which radiation type travels thousands of yards with high penetration capability?

• A. ALPHA
• B. BETA
• C. GAMMA
• D. THETA

Answer: (C)

Gamma radiation travels thousands of yards with high penetration capability. It’s an electromagnetic wave with no mass and no electric charge, so it passes through air and most materials far more readily than charged particles. That weak interaction with matter means gamma rays can travel long distances before being absorbed, requiring dense shielding like concrete or lead to stop them effectively. In contrast, alpha particles are heavy and charged, so they’re stopped quickly by skin or a sheet of paper; beta particles have more penetration than alpha but are still blocked by modest shielding like a few millimeters of aluminum. Theta isn’t a recognized radiation type.