The maximum frequency of transmitted radio waves above which the radio waves are no longer reflected back by ionosphere is (N = maximum electron density of ionosphere, g = acceleration due to gravity)

Options

A. gN
B. `gN^(2)`
C. `gsqrt(N)`
D. `g^(2)N^(2)`

Answer

C

Explanation

According to question, the maximum frequency of radio waves that can be reflected back by the ionosphere is given by ` g sqrt(N)` .
where , g=acceleration due to gravity and N=maximum electron density of ionosphere .