Question

What is the Principle for hearing aid

Answer 1

hiii guys......A hearing aid has three basic parts: amicrophone, amplifier, and speaker. The hearing aid receives sound through amicrophone, which converts the sound waves to electrical signals and sends them to an amplifier. The amplifier increases the power of the signals and then sends them to the ear through a speaker....
hope it help u

Answer 2

$\Large{\underline{\underline{\bf{Solution :}}}}$

★ Ear Trumpet (or Hearing Aid) :

Ear trumpet or hearing aid is used by the persons who are hard of hearing. The sound waves received by the wide end of the trumpet are reflected into a much narrower area, leading it to the ear. This increases amplitude of the vibrating air inside the ear and helps in improving hearing.