Physics · Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, Gamma rays), applications of electromagnetic waves
Which one moves with greatest speed:
Which one moves with greatest speed:
- A. \( \alpha \) -rays
- B. \( \beta \) -rays
- C. \( \gamma \) -rays
- D. cathode rays
Step-by-step solution
γ-rays are electromagnetic waves and travel at the speed of light (3×10^8 m/s). β-rays (electrons) and cathode rays (also electrons) are slower, typically at fractions of light speed. α-rays (helium nuclei) are the slowest due to their larger mass. Therefore, γ-rays have the greatest speed.
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