For F1 layer the maximum ionic density is 2.3 x 10⁴ electrons per cc. The crit

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For F1 layer the maximum ionic density is 2.3 x 10⁴ electrons per cc. The critical frequency for this layer will be

Options:

A . 1.36 MHz

B . 13.6 MHz

C . 136 MHz

D . 1360 MHz

Answer: Option B
Answer: (b).13.6 MHz

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