Why are alpha-particles deflected less than beta-particles when they pass through a magnetic field?
Alpha-particles have a much larger mass than beta-particles.
Alpha-particles have a smaller electric charge than beta-particles.
Alpha-particles travel at much higher speeds than beta-particles.
Alpha-particles have less ionizing power than beta-particles.
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.