Consider the following statements about the microphone and the speaker of a mobile phone: 1. The microphone converts sound to a mechanical signal. 2. The microphone converts sound to an electrical signal. 3. The speaker converts a mechanical signal to sou

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Q: 47 (CDS-I/2023)
Consider the following statements about the microphone and the speaker of a mobile phone:
1. The microphone converts sound to a mechanical signal.
2. The microphone converts sound to an electrical signal.
3. The speaker converts a mechanical signal to sound.
4. The speaker converts an electrical signal to sound.
Which of the statements given above are correct?

question_subject: 

Science & Technology

question_exam: 

CDS-I

The microphone converts sound waves into electrical signals, and the speaker converts electrical signals back into sound waves. Therefore, statements 2 and 4 are correct.