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CAIE A-Level Physics AS 11.1.10 Particles Have Discrete Energies But That Particles Have a Continuous Questions

Explain discrete alpha energies and continuous beta spectra by relating decay energy sharing to neutrinos and antineutrinos.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Explain why alpha particles have discrete energies while beta particles have continuous spectra.
  • Use energy-spectrum evidence to account for neutrino energy sharing in beta decay.

CAIE A-Level Physics AS 11.1.10 Particles Have Discrete Energies But That Particles Have a Continuous Questions question 1

[Maximum number: 1]

Which statement about radioactive decay is correct?

A

Neutrinos are always emitted during α\alpha-decay.

B

The α\alpha-particles emitted from a radioactive sample have a continuous range of kinetic energies.

C

The β−\beta^{-}particles emitted from a radioactive sample have a continuous range of kinetic energies.

D

The proton number of a nucleus decreases by four when it undergoes α\alpha-decay.

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