MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many spectral lines does hydrogen have? |
| A. | Four |
| B. | Three |
| C. | Two |
| D. | One |
| Answer» B. Three | |
| 2. |
Which of the following is found in the UV region of the spectrum? |
| A. | Pfund series |
| B. | Brackett series |
| C. | Lyman series |
| D. | Paschen series |
| Answer» D. Paschen series | |
| 3. |
When is hydrogen stable? |
| A. | When the electron jumps to higher energy levels |
| B. | When an electric field is introduced |
| C. | When a magnetic field is introduced |
| D. | When the electron is at its ground state |
| Answer» E. | |
| 4. |
Bohr s model only works for hydrogen or helium. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which theory explained that electrons revolved in circular orbits? |
| A. | Einstein theory |
| B. | Bohr theory |
| C. | Rydberg theory |
| D. | de Broglie theory |
| Answer» C. Rydberg theory | |
| 6. |
How many spectral lines are there in the hydrogen spectrum? |
| A. | Infinity |
| B. | Zero |
| C. | Multiple |
| D. | One |
| Answer» D. One | |
| 7. |
What causes spectral lines? |
| A. | The transition of electrons between two energy levels |
| B. | The transition of electrons between two wavelength ranges |
| C. | Magnetic and electric field exiting in an atom |
| D. | The transition of electrons from electric to magnetic field |
| Answer» B. The transition of electrons between two wavelength ranges | |