T.V. transmission cannot cover a very large area because
Correct answer: C. the shape of the earth is spherical
- A. the strength of T.V. waves is very limited
- B. picture cannot be transmitted clearly after a specific distance
- C. the shape of the earth is spherical
- D. the air is not a good conductor of light and sound/waves
Explanation
TV signals generally travel by line of sight, so the Earth's curved surface blocks them beyond the horizon. This is why transmitters, relay stations and satellites are used to extend coverage.
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