Name: The Speed of a Travelling Wave
Uploaded: 2019-07-19
Duration: 4 min 21 s
Description: How do you derive the wave speed of the travelling wave, and what is the relation of the wave speed with wave frequency, wavelength and time period? Let's le...

Question

Define progressive wave. State any four properties.

Accepted Answer

A wave that travels continuously in a medium in the same direction without the change in its amplitude is called a travelling wave or progressive wave.

Properties of progressive wave are :

Every particle of the medium completes vibration about its mean position. Progressive wave is a disturbance that moves through a medium with a definite velocity without changing its shape. The disturbance progresses forward from one particle to another.

The particles of the medium vibrate with the same amplitude of their average positions. All the particles should be the same highest velocity when they pass through the average position. The phase of every particle from $0 t o 2 π$ .

Transverse progressive waves are characterised by peaks and pit. Longitudinal waves are characterised by compressions and rarefactions.

No particle continues permanently at the break. Twice when each vibration, the particles are instantly at the break at extreme positions, different particles get the position at a different time.

Define progressive wave. State any four properties.

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