Which statement about α\alphaα-radiation is correct?
It is more penetrating than β\betaβ-radiation.
It consists of helium-4 nuclei.
It is unaffected by electric fields.
It is less ionising than γ\gammaγ-radiation.
134 exam-style questions on CIE IGCSE Physics 5.2.2a Alpha, beta and gamma emission. Each one has a worked solution and a mark scheme showing where the marks go.