A. Sound waves
B. UV waves
C. Radio waves
D. None of these
🧠 Explanation:
Mobile phones communicate using radio waves, electromagnetic signals that transmit voice and data. Operating in specific frequency bands, radio waves enable wireless connectivity between devices and cell towers. This technology underpins mobile networks, supporting calls, texts, and internet access. Radio waves’ ability to travel long distances makes them ideal for global communication systems. Their use in mobile phones reflects advancements in telecommunications, enabling instant connectivity worldwide. Understanding radio wave technology is key in engineering and communication studies, highlighting its role in shaping modern digital life and global information exchange.
