WAEC Physics 2020 Paper

Concept:A magnetic field deflects only charged particles; neutral radiation passes undeflected.Explanation:$\alpha$-particles are positively charged, so they are deflected by the magnetic field.$\beta$-particles are negatively charged, so they are also deflected, in the opposite direction.$\gamma$-rays have no charge, so they are not deflected by the magnetic field.Therefore, the sequence of observations is deflected, deflected, and not deflected.Answer:Deflected, deflected, not deflected.