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Assertion: AM detection is the process o...

Assertion: AM detection is the process of recovering the modulating signal from amplitude modulated waveform wich is carried out using a rectifier and an evelope detector.
Reason: Amplitude modulated waves can be produced by application of the message signal and the carrier wave to a non-linear device followed by band pass filter.

A

a) A and R both are true and R is correct explaination of A

B

b) A is true but R is false

C

c) A is false but R is true

D

d) Both A and R are false

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion and reasoning question, we will analyze both the assertion and the reason to determine their truth values and their relationship. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "AM detection is the process of recovering the modulating signal from the amplitude modulated waveform, which is carried out using a rectifier and an envelope detector." - This statement is true. In amplitude modulation (AM), the original message signal can be recovered from the modulated waveform using a rectifier (to remove the carrier frequency) and an envelope detector (to extract the modulation). 2. **Understanding the Reason**: - The reason states that "Amplitude modulated waves can be produced by application of the message signal and the carrier wave to a non-linear device followed by a band-pass filter." - This statement is also true. AM waves are indeed generated by combining the message signal with a carrier wave using a non-linear device (like a mixer or modulator) and then filtering the output to remove unwanted frequencies. 3. **Analyzing the Relationship**: - While both the assertion and reason are true, the reason does not provide a correct explanation for the assertion. The assertion is about the detection of the modulating signal, while the reason discusses the production of the AM wave. - Therefore, the reason does not explain why AM detection is done using a rectifier and envelope detector. 4. **Conclusion**: - Since the assertion is true and the reason is true but not a correct explanation of the assertion, the correct option is: - **B: A is true but R is false.** ### Final Answer: The correct option is **B: A is true but R is false.**
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