MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the relative population of atoms in a ruby layer that produces a light beam of frequency 6 X 1014 Hz at 300 K. |
| A. | e<sup>-85</sup> |
| B. | e<sup>-90</sup> |
| C. | e<sup>-95</sup> |
| D. | e<sup>-100</sup> |
| Answer» D. e<sup>-100</sup> | |
| 2. |
To achieve optical amplifications, it is essential to create a non-equilibrium distribution of atoms. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
At the state when N1 > N2, the intensity of light wave _____________ |
| A. | Increases linearly |
| B. | Increases exponentially |
| C. | Decreases linearly |
| D. | Decreases exponentially |
| Answer» E. | |
| 4. |
During pumping, the atoms are exited to ___________ |
| A. | Higher Exited States |
| B. | Lower Energy states |
| C. | Meta Stable states |
| D. | Not Excited |
| Answer» D. Not Excited | |
| 5. |
The ratio of N2 and N1 is given by ___________ |
| A. | e ( frac{-hv}{kT} ) |
| B. | e ( frac{hv}{kT} ) |
| C. | e ( frac{-hv}{T} ) |
| D. | e ( frac{hv}{T} ) |
| Answer» B. e ( frac{hv}{kT} ) | |
| 6. |
The relationship between N1 and N2 for stimulated emission to be dominant is ___________ |
| A. | N1 = N2 |
| B. | N1 > N2 |
| C. | N2 > N1 |
| D. | No such relationship |
| Answer» D. No such relationship | |
| 7. |
During Population inversion, which of the following processed is dominant? |
| A. | Stimulated Absorption |
| B. | Stimulated Emission |
| C. | Spontaneous Emission |
| D. | Spontaneous Absorption |
| Answer» C. Spontaneous Emission | |