It is necessary to use satellites for long distance TV transmission because

TV signal has short wavelength

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TV signal has long wavelength

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TV signal has light signal

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TV signals are not reflected by ionosphere

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Solution

The correct option is D TV signals are not reflected by ionosphere
$A n s w e r : -$ D
TV signals being of high frequency are not reflected by the ionosphere. Therefore, to reflect these signals, satellites are needed. That is why, satellites are used for long distance TV transmission.
Most long-distance shortwave (high frequency) radio communication—between 3 and 30 MHz—is a result of skywave propagation.
This 3-30 MHz is range of frequency which are used in skywaves propogation so that ionosphere is capable of reflecting it.

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