MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is a non-central force? |
| A. | Electrostatic force |
| B. | Nuclear force |
| C. | Gravitational force |
| D. | Spring force |
| Answer» C. Gravitational force | |
| 2. |
For uranium nucleus how does its mass vary with volume? |
| A. | m ∝ V |
| B. | m ∝ \(\frac {1}{V}\) |
| C. | m ∝ √V |
| D. | m ∝ V2 |
| Answer» B. m ∝ \(\frac {1}{V}\) | |
| 3. |
If elements with principal quantum number n > 4 were not allowed in nature, then what will be the number of possible elements? |
| A. | 60 |
| B. | 20 |
| C. | 4 |
| D. | 64 |
| Answer» B. 20 | |
| 4. |
β-rays emitted from radioactive material are known as electromagnetic radiation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
If alpha, beta, and gamma rays carry the same momentum, which has the longest wavelength? |
| A. | Alpha rays |
| B. | Beta rays |
| C. | Gamma rays |
| D. | All have the same wavelength |
| Answer» E. | |
| 6. |
When a radioactive substance emits an α-particle, its position in the periodic table is lowered by which of the following? |
| A. | One place |
| B. | Two places |
| C. | Three places |
| D. | Four places |
| Answer» C. Three places | |
| 7. |
Which of the following has the highest neutron ratio? |
| A. | 8O16 |
| B. | 2He4 |
| C. | 26Fe56 |
| D. | 92U235 |
| Answer» E. | |
| 8. |
The magnetic moment of a revolving electron around the nucleus varies with the principal quantum number as which of the following? |
| A. | μ ∝ n |
| B. | μ ∝ \(\frac {1}{n}\) |
| C. | μ ∝ n2 |
| D. | μ ∝ \(\frac {1}{n^2}\) |
| Answer» B. μ ∝ \(\frac {1}{n}\) | |
| 9. |
The neutron was discovered by whom? |
| A. | Marie Curie |
| B. | Pierre Curie |
| C. | Rutherford |
| D. | James Chadwick |
| Answer» E. | |