Question

In microphones, sound energy is converted to.

• A. potential energy.
• B. electrical energy.
• C. light energy.
• D. chemical energy.

Answer 1

The correct option is B

electrical energy.

Explanation for the correct option

1. When we speak in front of a microphone, the diaphragm of the microphone vibrates.
2. Due to the vibration of the diaphragm, there occurs relative motion between the magnet and the coil fitted inside the microphone as a result of which electrical energy is produced by the process of electromagnetic induction.
3. Hence, in a microphone there occurs conversion of sound energy into electrical energy.
4. Option (b) electrical energy is correct.