Radio and television are based on…………..

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks what radio and television technology is fundamentally based on. This requires us to think about the principles that allow these technologies to function.

2. **Identifying Key Concepts**: Radio and television are forms of communication technology. They transmit information over distances without the need for physical connections. This leads us to consider the types of waves used in these technologies.

3. **Electromagnetic Waves**: Both radio and television signals are transmitted using electromagnetic waves. These waves can travel through the air and are capable of carrying information.

4. **Production of Electromagnetic Waves**: The first step in the functioning of radio and television is the production of electromagnetic waves. This occurs in transmitters, which convert electrical signals into electromagnetic waves.

5. **Propagation of Electromagnetic Waves**: Once produced, these waves propagate through the atmosphere. This means they spread out and travel over distances, allowing the signals to reach receivers.

6. **Reception of Electromagnetic Waves**: The final step is the reception of these waves by antennas connected to radios and televisions. The receivers convert the electromagnetic waves back into electrical signals, which can then be processed to produce sound and images.

7. **Conclusion**: Therefore, we conclude that radio and television are based on the production, propagation, and reception of electromagnetic waves.

**Final Answer**: Radio and television are based on the production, propagation, and reception of electromagnetic waves.

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