MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 18 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. |
Calculate the numerical aperture of an optical fibre whose core and cladding are made of materials of refractive index 1.6 and 1.5 respectively. |
| A. | 0.55677 |
| B. | 55.77 |
| C. | 0.2458 |
| D. | 0.647852 |
| Answer» B. 55.77 | |
| 2. |
Which of the following is known as fibre optic back bone? |
| A. | Telecommunication |
| B. | Cable television |
| C. | Delay lines |
| D. | Bus topology |
| Answer» E. | |
| 3. |
A fibre optic telephone transmission can handle more than thousands of voice channels. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
When more than one mode is propagating, how is it dispersed? |
| A. | Dispersion |
| B. | Inter-modal dispersion |
| C. | Material dispersion |
| D. | Waveguide dispersion |
| Answer» C. Material dispersion | |
| 5. |
What is the other name for a maximum external incident angle? |
| A. | Optical angle |
| B. | Total internal reflection angle |
| C. | Refraction angle |
| D. | Wave guide acceptance angle |
| Answer» E. | |
| 6. |
WHEN_MORE_THAN_ONE_MODE_IS_PROPAGATING,_HOW_IS_IT_DISPERSED??$ |
| A. | Dispersion |
| B. | Inter-modal dispersion |
| C. | Material dispersion |
| D. | Waveguide dispersion |
| Answer» C. Material dispersion | |
| 7. |
Which of the following is known as fibre optic back bone? |
| A. | Telecommunication |
| B. | Cable television |
| C. | Delay lines |
| D. | Bus topology |
| Answer» E. | |
| 8. |
A_fibre_optic_telephone_transmission_can_handle_more_than_thousands_of_voice_channels.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
A step-index fibre has a numerical aperture of 0.26, a core refractive index of 1.5 and a core diameter of 100micrometer. Calculate the acceptance angle. |
| A. | 1.47° |
| B. | 15.07° |
| C. | 2.18° |
| D. | 24.15° |
| Answer» C. 2.18¬¨¬®‚Äö√†√ª | |
| 10. |
Calculate_the_numerical_aperture_of_an_optical_fibre_whose_core_and_cladding_are_made_of_materials_of_refractive_index_1.6_and_1.5_respectively. |
| A. | 0.55677 |
| B. | 55.77 |
| C. | 0.2458 |
| D. | 0.647852 |
| Answer» B. 55.77 | |
| 11. |
What causes microscopic bend? |
| A. | Uniform pressure |
| B. | Non-uniform volume |
| C. | Uniform volume |
| D. | Non-uniform pressure |
| Answer» E. | |
| 12. |
Which of the following loss occurs inside the fibre? |
| A. | Radiative loss |
| B. | Scattering |
| C. | Absorption |
| D. | Attenuation |
| Answer» C. Absorption | |
| 13. |
In which of the following there is no distortion? |
| A. | Graded index fibre |
| B. | Multimode step-index fibre |
| C. | Single step-index fibre |
| D. | Glass fibre |
| Answer» B. Multimode step-index fibre | |
| 14. |
Which of the following has more distortion? |
| A. | Single step-index fibre |
| B. | Graded index fibre |
| C. | Multimode step-index fibre |
| D. | Glass fibre |
| Answer» D. Glass fibre | |
| 15. |
How does the refractive index vary in Graded Index fibre? |
| A. | Tangentially |
| B. | Radially |
| C. | Longitudinally |
| D. | Transversely |
| Answer» C. Longitudinally | |
| 16. |
A single mode fibre has low intermodal dispersion than multimode. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
What is the other name for a maximum external incident angle? |
| A. | Optical angle |
| B. | Total internal reflection angle |
| C. | Refraction angle |
| D. | Wave guide acceptance angle |
| Answer» E. | |
| 18. |
What is the principle of fibre optical communication? |
| A. | Frequency modulation |
| B. | Population inversion |
| C. | Total internal reflection |
| D. | Doppler Effect |
| Answer» D. Doppler Effect | |