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What mass and charge do Gamma rays Have?

A
  

zero mass and no charge

B
  

zero mass and positive charge

C
  

unit mass and zero charge

D
  

unit mass and negative charge

Correct Answer: A

zero mass and no charge

Gamma rays are one of those topics in Physics and Chemistry that students often confuse with alpha and beta particles — but once you understand what gamma rays actually are, the answer becomes obvious and unforgettable. Unlike alpha and beta radiation, gamma rays are not particles at all. They are pure electromagnetic radiation — essentially high-energy waves of energy released from the nucleus of a radioactive atom during nuclear decay. Since they are waves and not particles, they carry absolutely zero mass and no charge, making them fundamentally different from every other type of nuclear radiation.

  • Zero Mass: Gamma rays are pure electromagnetic waves with no rest mass whatsoever — similar to light but with far greater energy
  • No Charge: Being electromagnetic in nature, gamma rays carry no electric charge — neither positive nor negative
  • High Penetration: Most penetrating of all three radiations — easily pass through thick concrete walls
  • Speed: Travel at the speed of light (3×10⁸ m/s), just like all other electromagnetic waves
  • Comparison: Alpha particles carry positive charge with unit mass; beta particles carry negative charge with negligible mass — only gamma rays have zero mass and zero charge

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