Question

If the height of TV transmitting antenna is increased its coverage increases. Why?

Answer 1

Coverage $\left(d\right)$ of transmitting antenna is given by ,

$d=\sqrt{2hR}$

where , $h=$ height of transmitting antenna

$R=$ radius of earth

It is clear from above relation that

$d\propto \sqrt{h}$

Hence , if the height $h$ of transmitting antenna is increased its coverage $d$ increases .