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Frequencies higher than 10 Mhz are found...

Frequencies higher than 10 Mhz are found not to be reflected by the ionosphere on a particular day at a place. Calculate the maximum electron density of the ionosphere.

Text Solution

Verified by Experts

Here, `v_c = 10 MHz = 10^(7) Hz,`
`N_(max) = ?`
Now, `v_c = 9 (N_(max))^(1//2)`
or `N_(max) = v_(c)^(2)/ 81 = (10^7)^(2)/81 = 1.23 xx 10^12 m^(-3)`
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