MCQOPTIONS
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| 1. |
Find the critical frequency when the refractive index of the layer is 0.54 and MUF is 9MHz? |
| A. | 0.84MHz |
| B. | 7.57MHz |
| C. | 0.75MHz |
| D. | 8.4MHz |
| Answer» C. 0.75MHz | |