MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which will be the unknown nucleus formed when 22Ne10 decays into two α-particles and an unknown nucleus? |
| A. | Fluorine |
| B. | Carbon |
| C. | Neon |
| D. | Oxygen |
| Answer» C. Neon | |
| 2. |
Emission of β-rays in radioactive decay results in the change of either mass or charge. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Find the probability that the nucleus of 87Ra221 undergoes decay after three half-lives if it’s a radioactive substance that has a half-life of 6 days. |
| A. | 1/6 |
| B. | 5/6 |
| C. | 7/8 |
| D. | 1/2 |
| Answer» D. 1/2 | |
| 4. |
The electron emitted in β – radiation originates from where? |
| A. | Inner orbits of atoms |
| B. | Free electrons existing in nuclei |
| C. | The decay of a neutron in nuclei |
| D. | Photon escaping from the nucleus |
| Answer» D. Photon escaping from the nucleus | |