Modulation is the process of superposing

Options

A. low frequency audio signal on high frequency radio waves.
B. low frequency radio signals on low frequency audio wave.
C. high frequency radio signal on low frequency audo signal.
D. high frequency audio signal on low frequency radio waves.

Explanation

**Step-by-Step Solution:**

1. **Understanding Modulation**: Modulation is a technique used in communication systems to transmit information over a distance. It involves altering a carrier signal to encode the information being sent.

2. **Identifying the Components**: In modulation, there are two main components:
- **Modulating Signal**: This is the signal that contains the information we want to transmit. In this case, it is a lower frequency audio signal.
- **Carrier Signal**: This is a high-frequency signal that carries the modulating signal. It is typically a radio wave.

3. **Superposition of Signals**: The process of modulation involves superimposing the modulating signal (low frequency audio signal) onto the carrier signal (high frequency radio wave). This means that the characteristics of the carrier wave are altered in accordance with the information contained in the modulating signal.

4. **Result of Modulation**: The result of this superposition is a new signal that can be transmitted over long distances. The modulated signal retains the information of the audio signal while being able to travel efficiently through the medium (like air).

5. **Conclusion**: Therefore, modulation is the process of superimposing a lower frequency audio signal onto a high-frequency radio signal (carrier wave).

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