Change in amplitude of wave on reflection

In summary, amplitude is the maximum displacement or distance that a particle in a wave oscillates from its resting position. It remains constant when a wave reflects off of a fixed boundary, but is inverted when it reflects off of a free boundary. The amplitude of a reflected wave is always equal to the amplitude of the incident wave, unless it reflects off of a free boundary.
  • #1
Amith2006
427
2
Sir,
When a wave is reflected from a free end or a rigid end, will there be a change in amplitude always?
 
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  • #2
Amith2006 said:
Sir,
When a wave is reflected from a free end or a rigid end, will there be a change in amplitude always?

What do you think?
 
  • #3
Amith2006 said:
Sir,
When a wave is reflected from a free end or a rigid end, will there be a change in amplitude always?
I think Yes.
 
  • #4
Amith2006 said:
I think Yes.

You're correct, as far as the magnitude is concerned, assuming NO power loss at the "end".
 

What is the definition of amplitude in a wave?

Amplitude is the maximum displacement or distance that a particle in a wave oscillates from its resting position. It is usually measured from the equilibrium point of the wave to the crest or trough.

How does the amplitude change when a wave reflects off of a fixed boundary?

When a wave reflects off of a fixed boundary, the amplitude remains the same. This means that the maximum displacement of the wave remains constant, but the direction of the wave may change.

What happens to the amplitude when a wave reflects off of a free boundary?

When a wave reflects off of a free boundary, the amplitude is inverted. This means that the maximum displacement of the wave changes direction, resulting in a reflected wave with the same amplitude but opposite direction.

Can the amplitude of a reflected wave be greater than the amplitude of the incident wave?

No, the amplitude of a reflected wave cannot be greater than the amplitude of the incident wave. This is because the amplitude of a wave is determined by the energy of the wave, and energy cannot be created or destroyed by reflection.

How does the amplitude of a reflected wave compare to the amplitude of the incident wave?

The amplitude of a reflected wave is equal to the amplitude of the incident wave, unless the wave reflects off of a free boundary. In that case, the amplitude will be inverted but still have the same magnitude.

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