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Given below is the circuit diagram of an AM demodulator. For good demodulation of AM signal of carrier frequency $f$, the value of $R C$ should be

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Verified Answer
The correct answer is:
$R C \gg 1 / f$.
For good demodulation,
$$
\frac{1}{f} \ll R C \text { or, } R C \gg \frac{1}{f} \text {. }
$$
$$
\frac{1}{f} \ll R C \text { or, } R C \gg \frac{1}{f} \text {. }
$$
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