MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When a ray of light enters one medium from another medium, which quality will not change? |
| A. | Direction |
| B. | Frequency |
| C. | Speed |
| D. | Wavelength |
| Answer» C. Speed | |
| 2. |
The ratio of speed of light in air to the speed of light in another medium is called as _________ |
| A. | Speed factor |
| B. | Dielectric constant |
| C. | Reflection index |
| D. | Refraction index |
| Answer» E. | |
| 3. |
What is the numerical aperture of the fiber if the angle of acceptance is 16 degree? |
| A. | 0.50 |
| B. | 0.36 |
| C. | 0.20 |
| D. | 0.27 |
| Answer» E. | |
| 4. |
Light incident on fibers of angles________the acceptance angle do not propagate into the fiber. |
| A. | Less than |
| B. | Greater than |
| C. | Equal to |
| D. | Less than and equal to |
| Answer» C. Equal to | |
| 5. |
The light sources used in fibre optics communication are ____________ |
| A. | LED s and Lasers |
| B. | Phototransistors |
| C. | Xenon lights |
| D. | Incandescent |
| Answer» B. Phototransistors | |