Question
Question: A TV transmission tower has a height of 240 m. Signals broadcast from this tower will be received by...
A TV transmission tower has a height of 240 m. Signals broadcast from this tower will be received by line of sight communication at a distance of
(Radius of earth = 6.4 x 106 m)
A
100 km
B
110 km
C
55 km
D
120 km
Answer
55 km
Explanation
Solution
: Here , h=240m,R=6.4×106m
The maximum distance on earth from the transmitter upto which a signal can be received is
d=2Rh=2×(6.4×106)×240
=55.4×103m=55.4km