Question

Television signals cannot be received beyond a certain distance because:

  1. Signals are weak
  2. Antenna is weak
  3. Air absorbs signals
  4. The surface of the earth is curved

Answer:

Option D: The surface of the earth is curved

Detailed Solution:

The correct answer is “The surface of the earth is curved”.

Television signals, especially those transmitted over the airwaves, are limited in range due to the curvature of the Earth's surface. This curvature can obstruct line-of-sight communication, leading to signal degradation beyond a certain distance.