Nuclear Physics And Radioactivity Question 259
Question: Some radioactive nucleus may emit [IIT 1986]
Options:
A) Only one $ -13.6\ eV $ or $ \gamma $ at a time
B) All the three $ _{92}U^{238} $ and $ \gamma $ one after another
C) All the three $ \alpha ,\ \beta $ and $ \gamma $ simultaneously
D) Only $ \alpha $ and $ \beta $ simultaneously
Show Answer
Answer:
Correct Answer: A
Solution:
No radioactive substance emit 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
