A-LevelPhysicsNuclear physics9702/12 · Oct/Nov 2014 · Q381 Mark
Which statement about α-particles is correct?
Aα-particles emitted from a single radioactive isotope have a continuous distribution of energies.
Bα-particles have less ionising power than β-particles.
CThe charge of an α-particle is +1.60 × 10⁻¹⁹ C.
DThe speeds of α-particles can be as high as 1.5 × 10⁷ m s⁻¹.
✓ Correct answer
D: The speeds of α-particles can be as high as 1.5 × 10⁷ m s⁻¹.
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