Which of the following parameters of a wave undergoes a change when wave is reflected from a boundary ?
Intensity
Phase
Speed
Frequency
A
Phase
B
Speed
C
Intensity
D
Frequency
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Solution
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When the wave undergoes reflection against a rigid body it results into change of shape so as to maintain the boundary condition at the wall i.e. the particle at the boundary remains at rest.
Due to this there is change of phase.
Frequency, wavelength and speed remain constant.
Hence option (B) is correct.
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