Question on: JAMB Physics - 2020
Natural radioactivity consists of emission___
A
\(\alpha\)-particles and \(\beta\)-rays
B
\(\alpha\)-particles and X-rays
C
\(\gamma\)-ray and X-rays
D
\(\alpha\)-particles and \(\beta\)-rays and \(\gamma\)-rays
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Correct Option: D
Natural radioactivity involves the spontaneous emission of particles and/or energy from the nucleus of an unstable atom. The emissions include:
- Alpha (\(\alpha\)) particles: These are helium nuclei, consisting of 2 protons and 2 neutrons.
- Beta (\(\beta\)) rays: These are high-energy electrons or positrons.
- Gamma (\(\gamma\)) rays: These are high-energy photons, a form of electromagnetic radiation.
X-rays are also electromagnetic radiation, but are not usually emitted in natural radioactivity. Therefore, the best answer is the one that includes the primary forms of radiation emitted by naturally radioactive substances.
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