question_answer 20)

    A TV trasmission 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 earth to be 6.4 x 106 m) (a) 100 km                           (b)24km (c) 55 km                              (a) 50 km

Answer:

  (b,c,d) Here, h=240m,d=?;R=6.4x106m The maximum distance on earth from the transmitter upto which a signal can be received is