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Which of the following is TRUE of the particles emitted in radioactive disintegration?

Physics
JAMB 1989

Which of the following is TRUE of the particles emitted in radioactive disintegration?

  • A. the beta particle is the helium nucleus H
  • B. the alpha particle is lighter than the beta particle
  • C. the alpha particle is deflected more than the beta particle in a magnetic field
  • D. the beta particle is deflected more than the alpha particle in a magnetic field
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Correct Answer: Option D
Explanation

Due to their significantly smaller mass, beta particles have much less inertia and are easily "pushed" by the magnetic force, leading to a much greater deflection (curved path) compared to the heavy, bulky alpha particles.

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