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For sky wave propagation of a 10 MHz signal, which of the following statements are true:A. The minimum electron density in the ionosphere is `1.2xx10^(12)m^(-3)`B. The minimum electron density in the ionosphere is `10^(6) m^(-3)`C. The reflection of the given sky wave signal takes place from E layer of ionosphereD. The reflection of the layer of ionosphere |
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Answer» Here, v=10MHz =`10^(7) Hz. N=?` `v=9sqrt(N)` or `10^(7)=9sqrt(N)` Squaring both sides, `10^(14)=81xxN` `N-(10^(14))/(81)=~1.2xx10^(12) m^(-3)` The 10 MHz signal is reflected from F-layer of ionosphere. |
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