Question

State the characteristics of progressive
waves.









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Answer 1

Answer:

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Characteristics of progressive wave

• (a) Each particle of the medium executes vibration about its mean position. The disturbance progresses onward from one particle to another.
• (b) The particles of the medium vibrate with same amplitude about their

Explanation:

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Answer 2

Answer:

Characteristics of a progressive wave:

(1) Energy is transmitted from particle to particle without the physical transfer of matter.

(2) The particles of the medium vibrate periodically about their equilibrium positions.

(3) In the absence of dissipative forces, every particle vibrates with the same amplitude and frequency, but differs in phase from its adjacent particles. Every particle lags behind in its state of motion compared to the one before it.

(4) A wave notion is doubly periodic, i.e., it is periodic in time and periodic in space.

(5) The velocity of propagation through a medium depends upon the properties of the medium.

(6) Progressive waves are of two types: transverse and longitudinal. In a transverse mechanical wave, the individual particles of the medium vibrate perpendicular to the direction of propagation of the wave. The progressively changing phase of the successive particles results in the formation of alternate crests and troughs that are periodic in space and time. In an em wave, the electric and magnetic fields oscillate in mutually perpendicular directions, perpendicular to the direction of propagation.