Carrier waves are used for communicating signals over long distances because:
- Acarrier waves can be generated very easily.
- Blow frequencies cannot be easily modulated by the carrier waves.
- Clow frequencies can be transmitted over long distances.
- Dcarrier waves generated at higher frequencies can be transmitted over long distances.
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The $...........$ is the link connecting the transmitter and the receiver.
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List-$I$ List-$II$ $A$. Television signal $I$. $03\,KHz$ $B$. Radio signal $II$. $20\,KHz$ $C$. High Quality Music $III$. $02\,MHz$ $D$. Human speech $IV$. $06\,MHz$
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