Published by:
CGP EDU Academic Team
Published on: September 12, 2026
When a sound wave is reflected from a wall, the phase difference between the reflected and incident pressure wave is:
A
0
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
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 incoming 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.
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