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प्रश्न
A microphone converts :
पर्याय
electrical energy into sound energy in ordinary telephone
microwave energy into sound energy in a mobile phone
sound energy into mechanical energy is a stereo system
sound energy into electrical energy in public address system
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उत्तर
A microphone converts sound energy into electrical energy in public address systems.
Therefore, the answer is, (d) Sound energy into electrical energy in public address system.
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