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AP EAMCET202422 May 2024Morning ShiftPhysicsCommunication SystemActual

The maximum distance between the transmitting and receiving antennas for satisfactory communication in line of sight mode is 57.6 km . If the height of the receiving antenna is 80 m , the height of the transmitting antenna is (Radius of earth =6.4 10^6 ~m )

Options

  1. A28.8 m
  2. B51.2 m
  3. C25.6 m
  4. D14.4 m

Correct answer

B. 51.2 m

Step-by-step solution

aligned & Range =57.6 ~km , ~h _ r =80 ~m , R =6.4 10^6 ~m & Range = 2 Rh _ r + 2 Rh _ t & 57.6 10^3= 2 6.4 10^6 80 + 2 6.4 10^6 h _ t & h _ t =51.2 ~m aligned

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