JAMB Physics 2020 Paper

Concept:Natural radioactivity is the spontaneous decay of unstable nuclei by emitting nuclear radiations.Explanation:Natural radioactive decay can involve the emission of $\alpha$-particles, $\beta$-rays, and $\gamma$-rays.X-rays are not part of natural radioactive emission from the nucleus.Thus, natural radioactivity consists of all three types: $\alpha$-particles, $\beta$-rays, and $\gamma$-rays.Answer:D. $\alpha$-particles and $\beta$-rays and $\gamma$-rays