Nuclear Physics And Radioactivity Question 491
Some radioactive nucleus may emit alpha particles, beta particles, or gamma rays
Options:
A) Only one $ -13.6\ eV $ or $ \hbar\omega $ at a time
B) All the three $ _{92}U^{238} $ and $ \gamma $ one after another
C) All three $ \alpha $, $ \beta $, and $ \gamma $ simultaneously
D) Only $ \alpha $ and $ \beta $ simultaneously
Show Answer
Answer:
Correct Answer: A
Solution:
No radioactive substance emits both $ \alpha $ and $ \beta $ particles simultaneously. Some substances emit $ \alpha $-particles and some other emits $ \beta $-particles. $ \gamma $-rays are emitted along with both $ \alpha $ and $ \frac{4E}{3}-E=\frac{hc}{\lambda ‘}\Rightarrow \frac{E}{3}=\frac{hc}{\lambda ‘}\ \ \therefore \frac{\lambda ‘}{\lambda }=3\Rightarrow \lambda ‘=3\lambda $ particles.
BETA
