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A signal emitted by an antenna from a ce...

A signal emitted by an antenna from a certain point can be received at another point of the surface in the form of

A

sky wave

B

ground wave

C

sea wave

D

Both A And B

Text Solution

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The correct Answer is:
To solve the question regarding the form in which a signal emitted by an antenna can be received at another point on the surface, we can break it down into the following steps: ### Step-by-Step Solution: 1. **Understanding Antenna Functionality**: - An antenna is a device that converts electrical signals into electromagnetic waves and vice versa. It allows for the transmission and reception of signals over distances. 2. **Types of Wave Propagation**: - There are different methods through which signals can propagate from one point to another. The two primary methods we will discuss are: - **Sky Wave Propagation**: This involves the reflection of radio waves off the ionosphere, allowing signals to travel beyond the horizon. The ionosphere is a layer of the Earth's atmosphere that is ionized by solar and cosmic radiation. - **Ground Wave Propagation**: In this method, signals travel along the surface of the Earth. Ground waves can follow the curvature of the Earth and are typically used for shorter distances. 3. **Identifying the Correct Answer**: - The question asks for the forms in which a signal emitted by an antenna can be received. Given the explanations of both sky wave and ground wave propagation, we conclude that: - Signals can indeed be received as both sky waves and ground waves. 4. **Final Conclusion**: - Therefore, the correct answer to the question is that a signal emitted by an antenna can be received at another point on the surface in the form of both sky waves and ground waves. ### Answer: The signal emitted by an antenna can be received at another point on the surface in the form of **both A (sky wave) and B (ground wave)**. ---
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