Natural radioactivity consists of the emission of
A
\( \alpha \) -particle and \( \beta \) rays
B
\( \alpha \) -particle and X-rays
C
\( \gamma \)-rays and X-rays
D
\( \alpha \)-particle, \( \beta \) rays and \( \gamma \)-rays
E
\( \alpha \) -particle, \( \beta \) rays, \( \gamma \)-rays and X-rays
Verified Correct Answer: D.
Physical Principles & Numerical Solution
Natural radioactivity is the radioactivity found in nature, such as uranium, thorium ores, and natural nuclear fuels. It consists of the emission of radiations such as \alpha-particles, \beta-rays, and γ-rays
Source: Myschool Past Questions Archive (Record #29134)