The process of retrieval of information from the carrier wave at the receiver is termed as:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Demodulation
At the transmitter the message is superimposed on a high frequency carrier wave; at the receiver the message has to be recovered from the carrier. That recovery is demodulation.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic was removed from the latest NCERT book (2026-27), and it also appears to be out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Basic Terminology Used in Electronic Communication Systems – “… Demodulation: The process of retrieval of information from the carrier wave at the receiver is termed demodulation. This is the reverse process of modulation.”