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  • When a sound wave is reflected from a wall, the phase difference between the reflected and incident pressure wave is:Option: 1 <img alt="0" src="http

When a sound wave is reflected from a wall, the phase difference between the reflected and incident pressure wave is:

Option: 1

0         


Option: 2

\pi


Option: 3

\frac{\pi }{2}


Option: 4

\frac{\pi }{4}


Answers (1)

best_answer

 

Pressure Waves -

\Delta P= -\Delta P_{max}\cdot \cos \left ( Kx-\omega t \right )
 

- wherein

\Delta P_{max} = Maximum variation in pressure

 

 

When a sound wave gets reflected from a rigid boundary, the particles at the boundary are unable to vibrate. Thus, a reflected wave is generated which interferes with the oncoming wave to produce zero displacement at the rigid boundary. At these points (zero displacement), the pressure variation is maximum. Thus, a reflected pressure wave has the same phase as the incident wave.

Posted by

Sanket Gandhi

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