A receiver in a communication system must have

Pick-up antenna

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Demodulator

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Amplifier

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All of these

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Solution

The correct option is C Pick-up antenna
A receiver in a communication system must have a pick-up antenna , a demodulator and an amplifier . A pick-up antenna is used to receive the signal . Then demodulator , separates the carrier wave from original signal . And amplifier , gives strength to the weak original signal .

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