MCQOPTIONS
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| 1. |
Calculate the critical frequency for the E layer if maximum ionic densities are 3 x 106 |
| A. | 15.58 x 106 |
| B. | 15.58 kHz |
| C. | 1.58 x 103 |
| D. | None of the above |
| Answer» C. 1.58 x 103 | |