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Identify the incorrect statement from the following
\( \mathrm{P} \)
(1) \( A M \) detection is carried out using a rectifier and
W. an envelope detector
(2) Pulse position denotes the time of rise or fall of the pulse amplitude
(3) Modulation index \( \mu \) is kept \( \geq 1 \), to avoid distortion
(4) Facsimile \( (F A X) \) scans the contents of the document to create electronic signals
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