Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store

In which of the following, sound waves cannot pass through?
(a). A solid-liquid mixture
(b). An ideal gas
(c). A liquid-gas mixture
(d). A perfect vacuum

seo-qna
Last updated date: 29th Mar 2024
Total views: 406.8k
Views today: 5.06k
MVSAT 2024
Answer
VerifiedVerified
406.8k+ views
- Hint: Sound waves are produced by vibrations of the particles in the medium.

Complete step-by-step solution -

First let us understand what sound waves are. Sound waves are the waves produced when the air particles vibrate or we can also say that when there is a disturbance caused in air, a sound wave is formed. For example, when you clap your hands, the process of clapping the hands sets the air molecules into vibrations and this causes the sound waves.
From the above example you may notice that to produce the sound waves, you have to clap your hands, which means that a source is needed to produce these waves. The vibrations of the source set the neighbouring air molecules into oscillations(vibrations), which set the further molecules into oscillations and in these way the vibrations travel and reach your ear to vibrate your eardrum too and the vibration of the eardrum is sensed by the brain and this is how you hear a sound.
Sound waves in the air can travel through different mediums. For example, you can hear people talking from a closed room. How is this possible? Shouldn’t the walls of the room act as a barrier for the waves to travel? But the walls do not act as a barrier, instead they allow the sound waves to travel through them. And it is simple to understand that the vibrating air molecules which are in contact with the surface of the wall will vibrate the molecules or particles of the wall and from there the wave proceeds further and comes out of the room and we can hear the sound from inside. So, wherever there are particles, sound waves can travel through that medium. But if there are no such particles to vibrate the sound waves cannot proceed further.
Hence, from the above given options, sound waves can travel through all the mediums except a perfect vacuum since it does not have any particles.

Note: It must be noted that the particles of the medium do not travel along with the wave. The particles of the medium only oscillate(vibrate) at their positions and due to this vibrations the waves propagate.



Recently Updated Pages