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In short wave communication, waves of wh...

In short wave communication, waves of which frequency (in MHz) will be reflected back by the ionospheric layer having electron density `10^( (11 )` per `(m)^(3)` ?

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In short wave communication waves of which of the following frequeuncies will be reflected back by the ionospheric layer having electron density 10^(11)per m^(3) ?

In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer, having electron density 10^(12) per m^(3)

In short wave communication, waves of which of the following frequencies will be reflected back by the ionoshperic layer having electron density 10^11 " per " m^3

Which one of the following frequencies will be reflated back by the ionospheric layer having an electron density of 10^12 per m^3 ?

The wave which are reflected back to the earth by ionosphere is

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