MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The refractive index is 2.33 and the critical angle is 350. Find the numerical aperture. |
| A. | 2 |
| B. | 1.9 |
| C. | 2.33 |
| D. | 12 |
| Answer» C. 2.33 | |
| 2. |
The core refractive index should be lesser than the cladding refractive index for a coaxial cable. State True/False |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The numerical aperture of a material with acceptance angle of 60 degree in water will be |
| A. | 1.15 |
| B. | 2.15 |
| C. | 5.21 |
| D. | 1.52 |
| Answer» B. 2.15 | |
| 4. |
Find the acceptance angle of a material which has a numerical aperture of 0.707 in air. |
| A. | 30 |
| B. | 60 |
| C. | 45 |
| D. | 90 |
| Answer» D. 90 | |
| 5. |
Find the refractive index of a medium having a velocity of 1.5 x 108. |
| A. | 0.5 |
| B. | 5 |
| C. | 0.2 |
| D. | 2 |
| Answer» E. | |
| 6. |
THE_NUMERICAL_APERTURE_OF_A_MATERIAL_WITH_ACCEPTANCE_ANGLE_OF_60_DEGREE_IN_WATER_WILL_BE?$ |
| A. | 1.15 |
| B. | 2.15 |
| C. | 5.21 |
| D. | 1.52 |
| Answer» B. 2.15 | |
| 7. |
The refractive index is 2.33 and the critical angle is 350. Find the numerical aperture.$ |
| A. | 2 |
| B. | 1.9 |
| C. | 2.33 |
| D. | 12 |
| Answer» C. 2.33 | |
| 8. |
The_core_refractive_index_should_be_lesser_than_the_cladding_refractive_index_for_a_coaxial_cable._State_True/False$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Choose the optical fibre material from the given materials. |
| A. | Glass |
| B. | Plastic |
| C. | Silica |
| D. | Quartz |
| Answer» D. Quartz | |
| 10. |
Find the acceptance angle of a material which has a numerical aperture of 0.707 in air? |
| A. | 30 |
| B. | 60 |
| C. | 45 |
| D. | 90 |
| Answer» D. 90 | |
| 11. |
The numerical aperture of a coaxial cable with core and cladding indices given by 2.33 and 1.4 respectively is |
| A. | 3.73 |
| B. | 0.83 |
| C. | 3.46 |
| D. | 1.86 |
| Answer» E. | |
| 12. |
The refractive index of air is unity. State True/False. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
The refractive index of water will be |
| A. | 1 |
| B. | 2.66 |
| C. | 5 |
| D. | 1.33 |
| Answer» E. | |
| 14. |
Find the refractive index of a medium having a velocity of 1.5 x 108. |
| A. | 0.5 |
| B. | 5 |
| C. | 0.2 |
| D. | 2 |
| Answer» E. | |
| 15. |
For total internal reflection to occur, which condition must be satisfied? |
| A. | N1 = N2 |
| B. | N1 > N2 |
| C. | N1 < N2 |
| D. | N1 x N2=1 |
| Answer» C. N1 < N2 | |
| 16. |
Numerical aperture is expressed as the |
| A. | NA = sin θa |
| B. | NA = cos θa |
| C. | NA = tan θa |
| D. | NA = sec θa |
| Answer» B. NA = cos ‚âà√≠‚Äö√†√®a | |
| 17. |
The expression for refractive index is given by |
| A. | N = v/c |
| B. | N = c/v |
| C. | N = cv |
| D. | N = 1/cv |
| Answer» C. N = cv | |