Physics (AS & A Level) · May / June 2017 · Paper 13 · Question 38

Which statement about α-particles is correct?

1. Aα-particles emitted from a single radioactive isotope have a continuous distribution of energies.
2. Bα-particles have less ionising power than β-particles.
3. CThe charge of an α-particle is +1.60 × 10⁻¹⁹ C.
4. DThe speeds of α-particles can be as high as 1.5 × 10⁷ m s⁻¹.

As printed in the paper