The ground wave eventually disappears, as one moves away from the transmitter, because of

Options

A. interference from the sky wave
B. loss of line of signal condition
C. maximum single hop distance limitation
D. diffraction effect causing tilting of the wave

Answer

To solve the question regarding why the ground wave eventually disappears as one moves away from the transmitter, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ground Waves**: Ground waves are radio waves that travel along the surface of the Earth. They are used for communication over short distances.

2. **Propagation of Ground Waves**: When a ground wave is transmitted from a transmitter, it travels along the ground towards a receiver. As the wave travels, it interacts with the Earth's surface.

3. **Energy Absorption**: As the ground wave propagates, some of its energy is absorbed by the Earth. This absorption reduces the intensity of the wave as it moves further away from the transmitter.

4. **Tilting of the Wave**: As the ground wave travels, it does not remain in a straight line. Instead, it begins to tilt or bend due to the interaction with the Earth's surface. This phenomenon is known as diffraction.

5. **Effect of Diffraction**: The tilting of the wave due to diffraction means that the wave's angle of propagation changes. As the angle increases, the effective distance that the wave can travel before it weakens or disappears also decreases.

6. **Conclusion**: Therefore, the ground wave eventually disappears as one moves away from the transmitter primarily due to the diffraction effect causing the wave to tilt and lose intensity.

### Final Answer:
The ground wave eventually disappears, as one moves away from the transmitter, because of the diffraction effect causing tilting of the wave.

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