Explain the working of the hearing aid. [3 MARKS]

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Solution

What is hearing aid : 1 Mark
Working principle : 2 Mark

A hearing aid is an electronic, battery operated device. People with hearing loss may need a hearing aid.

The hearing aid receives sound through a microphone. The microphone converts the sound waves to electrical signals. These electrical signals are amplified by an amplifier. The amplified electrical signals are given to a speaker of the hearing aid. The speaker converts the amplified electrical signal to sound and sends to the ear for clear hearing.

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