Consider the following statements about the microphone and the speaker of a mobile phone :<br>1. The microphone converts sound to a mechanical signal.<br>2. The microphone converts sound to an electrical signal.<br>3. The speaker converts a mechanical signal to sound.<br>4. The speaker converts an electrical signal to sound.<br>Which of the statements given above are correct?
- A. 1 and 3
- B. 1 and 4
- C. 2 and 3
- D. 2 and 4 ✓
Correct Answer: D. 2 and 4
Explanation
A microphone is a transducer that converts sound waves (acoustic energy) into electrical signals, whereas a speaker converts electrical signals back into sound waves.
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