Question

The height of transmitting antenna is (320$\times$k) meter, if the TV telecast is to cover a radius of 128 Km. Find the value of K.

Answer 1

formula,

$d=\sqrt{2hR}$

$\Rightarrow 128=\sqrt{2\times 320k\times 6400}$

${128}^2=2\times 320k\times 6400$

$\Rightarrow k=\frac{{128}^2}{2\times 320\times 6400}$

$\therefore k=4\times {10}^{-3}$