Everyday Science
NULL
Medium
Question
TV transmission cannot cover a very large area because:
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
✓ Official correct answer
D
the air is not a good conductor of light and sound/waves
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
the strength of T.V. waves is very limited
No member explanations yet for this option.
B
picture cannot be transmitted clearly after a specific distance
No member explanations yet for this option.
C
the shape of the earth is spherical
No member explanations yet for this option.
D
the air is not a good conductor of light and sound/waves
No member explanations yet for this option.
Explanation
Line-of-sight TV signals are blocked by the Earth's spherical shape beyond the horizon.
So the correct answer is the shape of the earth is spherical.
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