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Sound Wave - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main
Quick Facts
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13 Questions around this concept.
Solve by difficulty
A medium can carry a longitudinal wave because it has the property of
The following phenomenon cannot be observed for sound pulse:
Which of the following is false about sound waves?
Concepts Covered - 1
Sound Wave
Sound -
Sound is defined as the energy to which the human ears are sensitive is known as sound.
Sound waves always travel through any elastic material medium with a speed that depends on the properties of the medium. As sound
waves travel through the air, the molecules of air vibrate to produce changes in density and pressure along the direction of motion of the wave. If the source of the sound waves vibrates as a Sine wave, the pressure variations are also like Sine waves. Because of this, the mathematical description of sinusoidal sound waves is very similar to that of sinusoidal waves on strings.
| Transverse waves | Longitudinal waves |
| 1.In this particles of the medium vibrates in a direction perpendicular to the direction of propagation of the wave. |
1. In this particles of a medium vibrate in the direction of wave motion. |
| 2. Transverse waves travels in the form of crests and troughs. |
2. Longitudinal waves travels in the form of compression and rarefaction |
| 3. It can be transmitted through solids, they can be set up on the surface of liquids. But they can not be transmitted into liquids and gases. |
3. It can be transmitted through solids, liquids, and gases because, for these waves propagation, volume elasticity is necessary. |
| 4. Transverse waves can be polarised. |
4.Longitudinal waves can not be polarised. |
Now, as the sound wave travels through the air, the element of air vibrate to produce a change in density and pressure along the direction of motion of the wave. So as we discussed in the table that the movement of the sound waves is like compression and rarefaction, this is shown in the given image. The detail of this with an example will be discussed in the latter concept.
Here, is the wavelength.
R = Rarefraction
C = Compression
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