MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
The phenomenon which occurs when an incident wave strikes an interface at an angle greater than the critical angle with respect to the normal to the surface is called as ____________ |
| A. | Refraction |
| B. | Partial internal reflection |
| C. | Total internal reflection |
| D. | Limiting case of refraction |
| Answer» D. Limiting case of refraction | |
| 2. |
What is refraction? |
| A. | Bending of light waves |
| B. | Reflection of light waves |
| C. | Diffusion of light waves |
| D. | Refraction of light waves |
| Answer» B. Reflection of light waves | |
| 3. |
Which is the most important velocity in the study of transmission characteristics of optical fiber? |
| A. | Phase velocity |
| B. | Group velocity |
| C. | Normalized velocity |
| D. | Average velocity |
| Answer» C. Normalized velocity | |
| 4. |
A monochromatic wave propagates along a waveguide in z direction. These points of constant phase travel in constant phase travel at a phase velocity Vp is given by? |
| A. | V<sub>p</sub>= / |
| B. | V<sub>p</sub>= /c |
| C. | V<sub>p</sub>=C/N |
| D. | V<sub>p</sub>=mass/acceleration |
| Answer» B. V<sub>p</sub>= /c | |
| 5. |
When light is described as an electromagnetic wave, it consists of a periodically varying electric E and magnetic field H which are oriented at an angle? |
| A. | 90 degree to each other |
| B. | Less than 90 degree |
| C. | Greater than 90 degree |
| D. | 180 degree apart |
| Answer» B. Less than 90 degree | |
| 6. |
Constructive interference occur when total phase change after two successive reflections at upper and lower interfaces is equal to? (Where m is integer) |
| A. | 2 m |
| B. | m |
| C. | m/4 |
| D. | m/6 |
| Answer» B. m | |
| 7. |
When is the optical wavelength in vacuum, k is given by k=2 / . What does k stand for in the above equation? |
| A. | Phase propagation constant |
| B. | Dielectric constant |
| C. | Boltzmann s constant |
| D. | Free-space constant |
| Answer» B. Dielectric constant | |