For F1 layer the maximum ionic density is 2.3 x 104 electrons per cc. – McqOptions

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1.	For F₁ layer the maximum ionic density is 2.3 x 10⁴ electrons per cc. The critical frequency for this layer will be
A.	1.36 MHz
B.	13.6 MHz
C.	136 MHz
D.	1360 MHz
Answer» C. 136 MHz

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