At the end of a communication system, the radio signal is converted into sound to allow a human to hear the message, such as on a cell phone or radio receiver. The receiving device first converts the radio waves into electrical signals and then uses a speaker to transform these electrical signals into audible sound waves.
At the end of communication system, the signal is converted from radio to?
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Question context
This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.