Energy "X" is the input to the microphone which converts it to energy "Y". Identify X and Y from the options mentioned below.

X:- Electrical energy

Y:- Heat energy

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X:- Sound energy

Y:- Electrical energy

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X:- Electrical energy

Y:- Sound energy

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X:- Sound energy

Y:- Heat energy

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Solution

The correct option is B
X:- Sound energy

Y:- Electrical energy

When someone speaks, sound energy created by the voice travels to the microphone. Inside the microphone, the sound energy is converted to mechanical energy and further this mechanical energy is converted to electrical energy. So, the energy conversion that takes place in a microphone is:
Sound energy $\to$ Mechanical energy $\to$ Electrical energy

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