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What is the modulation used to?

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in Physics – Class 12 by (135k points)
What is the modulation used to?

(a) Reduce the bandwidth used

(b) Separate the transmissions of different users

(c) Ensure that intelligence may be transmitted to long distances

(d) Allow the use of practical antennas

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This key question is from Communication Systems in chapter Communication Systems of Physics – Class 12

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Right option is (a) Reduce the bandwidth used

Explanation: Modulation is used to reduce the bandwidth used. The use of high-frequency carrier waves reduces bandwidth. Modulation allows us to send a signal over a bandpass frequency range.

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