MCQOPTIONS
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MCQOPTIONS
| 1. |
The term critical frequency in Ionospheric propagation is |
| A. | Lowest frequency reflected by Ionosphere |
| B. | Highest frequency reflected by the Ionosphere at vertical incidence |
| C. | Lowest frequency reflected by the Ionosphere at vertical incidence |
| D. | Lowest communication frequency possible |
| Answer» C. Lowest frequency reflected by the Ionosphere at vertical incidence | |