JAMB - Physics (2018 - No. 3)
Natural radioactivity consists of the emission of
α- particles and β-rays
α- particles and X-rays
α- particles, β - rays and y-rays
γ- rays and X-rays
ব্যাখ্যা
Radioactivity is the spontaneous emission of radiation from atomic nuclei. This radiation can consist of alpha, beta, and gamma radiation.