Longitudinal and Transverse Waves
Longitudinal and Transverse Waves
Types of waves: Mainly there are two types of waves.
Longitudinal Waves:
When the direction of wave motion in a medium is along or parallel to the direction of vibrating particles in the medium, such waves are called longitudinal waves. Longitudinal waves can be generated in all mediums. The individual particles of the medium move in a direction parallel to the direction of propagation of the disturbance. The particles do not move from one place to another but they simply oscillate back and forth about their positions of rest. This is exactly how a sound wave propagates, hence sound waves are longitudinal waves. Longitudinal waves can be produced in all the three media such as solids, liquids and gases.
Graphical Representation of a Longitudinal Wave: When a longitudinal wave passes through air, the density of air changes continuously.
Transverse Waves:
When the direction of wave motion in a medium is perpendicular to the direction of vibrating particles in the medium, this type of waves are called transverse waves. Transverse waves can only be generated in the solid medium and on the upper surface of the fluid. Transverse waves cannot be produced within liquids and in gases. Transverse waves are transmitted as crest and trough. In transverse waves, the individual particles of the medium move about its mean position in a direction perpendicular to the direction of wave propagation. e.g. Light is a.transverse wave (but it is not a mechanical wave). Transverse waves can be produced only in solids and liquids but not in gases. Examples:
1. The waves produced by moving one end of a long spring or rope, up and down rapidly, whose other end is fixed, are transverse waves.
Which of the following are correct : (a) Transverse waves can be produced only in solids and liquids but not in gases. (b) Longitudinal waves can be produced in all the three media such as solids, liquids and gases. (c) Transverse waves can be produced in all the three media such as solids, liquids and gases. | |||
| Right Option : A | |||
| View Explanation | |||
Sound waves are ______ waves. | |||
| Right Option : B | |||
| View Explanation | |||
Longitudinal waves can be produced in ______________________. | |||
| Right Option : D | |||
| View Explanation | |||
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