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Asked in Premeth 2025 — Biomolecules, Nuclear Physics, Alternating Current, Comprehension 2025Moderate

The wavelength of beta rays is measured by the _.

Correct answer: D. Diffraction

  • A. Interference
  • B. Polarization
  • C. Absorption
  • D. Diffraction

Explanation

Beta rays are high-speed electrons or positrons that are emitted from the nucleus during beta decay. These electrons or positrons have a characteristic wavelength associated with their motion, known as the de Broglie wavelength. Diffraction is a phenomenon in which waves bend around an obstacle and interfere with each other. When beta rays are diffracted through a crystal lattice, the diffraction pattern produced can be used to determine the wavelength of the beta rays. Therefore, the wavelength of beta rays is measured by diffraction, making option D the correct answer.

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About Radioactive Decay

Radioactive decay is the spontaneous transformation of unstable nuclei, described by decay constant, activity, half life and the exponential decay law. Work includes alpha, beta and gamma emissions, decay equations and remaining nuclei, with half life distinguished from the time required for complete decay.

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