Physics (AS & A Level) · May / June 2024 · Paper 12 · Question 40
9702Atoms, nuclei and radiation
Which statement about radioactive decay is correct?
- ANeutrinos are always emitted during $\alpha$-decay.
- BThe $\alpha$-particles emitted from a radioactive sample have a continuous range of kinetic energies.
- CThe $\beta^-$ particles emitted from a radioactive sample have a continuous range of kinetic energies.
- DThe proton number of a nucleus decreases by four when it undergoes $\alpha$-decay.
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Correct answer: C. The $\beta^-$ particles emitted from a radioactive sample have a continuous range of kinetic energies.
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