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Question

(C) The radio horizon distance $d$ for a transmitting antenna of height $h$ is given by the formula $d = \sqrt{2Rh}$,where $R$ is the radius of the Ea

Vedclass · Accepted Answer

$22.4$

Vedclass · Answer

(C) The radio horizon distance $d$ for a transmitting antenna of height $h$ is given by the formula $d = \sqrt{2Rh}$,where $R$ is the radius of the Earth.Given: $h = 39.2 \ m = 39.2 	imes 10^{-3} \ km$ and $R = 6400 \ km$.Substituting the values into the formula:$d = \sqrt{2 	imes 6400 	imes 39.2 	imes 10^{-3}}$$d = \sqrt{12800 	imes 0.0392}$$d = \sqrt{501.76}$$d = 22.4 \ km$.Therefore,the correct option is $C$.

The radio horizon of a transmitting antenna of height $39.2 \ m$ is (Radius of the earth $= 6400 \ km$) (in $km$)

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