Multiple choice

Television signals cannot be received ordinarily beyond a particular distance due to

  1. weak of the signals

  2. weak antenna

  3. absorption of signals in the air

  4. curvature of the earth
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Television signals travel in straight lines and cannot follow Earth's curved surface. Beyond the horizon (the line of sight limited by Earth's curvature), signals cannot be received without repeaters or satellites. This is why TV reception was limited to a specific distance.

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