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A: Modulator is an essential component o...

A: Modulator is an essential component of a transmitter.
R: Modulator superimposes a low frequency message signal on a high frequency carrier wave.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)

B

If both Assertin & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false, then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will break down each part step by step. ### Step 1: Understanding the Role of a Modulator - A modulator is a crucial component in a communication system, specifically in a transmitter. Its primary function is to prepare the message signal for transmission over long distances. **Hint:** Think about what happens to signals when they are transmitted over long distances. ### Step 2: Function of a Modulator - The modulator takes a low frequency message signal (which contains the information we want to send) and superimposes it onto a high frequency carrier wave. This process is known as modulation. **Hint:** Consider why a low frequency signal might not be suitable for long-distance transmission. ### Step 3: Importance of Carrier Waves - High frequency carrier waves are used because they can travel longer distances and are less susceptible to noise and interference compared to low frequency signals. **Hint:** Reflect on the characteristics of high frequency waves in communication systems. ### Step 4: Evaluating the Statements - Statement A claims that "A modulator is an essential component of a transmitter." This is true, as modulators are necessary for the transmission of signals. - Statement R states that "Modulator superimposes a low frequency message signal on a high frequency carrier wave." This is also true, as this is the fundamental operation of a modulator. **Hint:** Think about how both statements relate to the function of a modulator in communication systems. ### Step 5: Conclusion - Since both statements A and R are correct, we can conclude that the relationship between them is that statement R clarifies and supports statement A. **Hint:** Consider how one statement provides additional information about the other. ### Final Answer Both statements A and R are correct, with R providing clarification for A.
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