A TV transmission tower has a height of 240 m. Signals broadcast from this tower will be received by LOS communication at a distance of (assume the radius of the earth to be 6.4 × 106 m) (a) 100 km (b) 24 km (c) 55 km (d) 50 km
Correct options are B) , C) and D) hT=240m R =6.4×106m For LOS communication range d1=2RhT dT=2+6.4×106×240=48×64×106 =4×8×1033=32000×1.732m = 55.424 km = 55424 m So, the range 55.424 km covers the range 24 km, 55 km and 50 km.
