Advertisements
Advertisements
प्रश्न
How is sound produced in a human larynx and a loudspeaker?
Advertisements
उत्तर
Production of sound in humans
The larynx (voice box) is responsible for producing sounds in humans. It consists of two vocal cords. These cords are arranged in such a manner that there is a small gap between them. This small gap allows air to pass through. When we speak, air is forced into this small gap by the lungs. This prompts our vocal cords to vibrate and hence, produce sounds.
Production of sound in loudspeaker
A loudspeaker consists of following parts:
- An electric coil wound on a permanent magnet.
- A conical shaped screen of the speaker connected to the coil.
Now, when variable current flows through the coil, magnetic field is produced around it due to electromagnetism, and it behaves like an electromagnet. Because of this, the coil is repelled and attracted by the permanent magnet alternately. The screen attached to the coil moves back and forth due to the attraction and repulsion of the coil and hence, produces sound.
संबंधित प्रश्न
Describe an experiment to estimate the speed of sound in air.
What should an object do to produce sound?
Name four ways in which sound can be produced.
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
How is sound produced? Explain with the help of an example.
How does sound from a sound producing body travel through air to reach our ears? Illustrate your answer with the help of a labelled diagram.
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
The vibrations of a simple pendulum are also known as _______.
Infrasound can be heard by
The substance through which sound is transmitted is called ______.
