A plane wave y=asin(bx+ct) is incident on a surface. Equation of the reflected wave is y′=a′sin(ct−bx) Which of the following statement is not correct?
A
The wave is incident on the surface normally.
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B
Reflecting surface is y-z plane.
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C
Medium, in which incident wave is travelling , is denser than the other medium.
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D
a' cannot be greater than a.
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Solution
The correct options are A The wave is incident on the surface normally. B Reflecting surface is y-z plane. C Medium, in which incident wave is travelling , is denser than the other medium. D a' cannot be greater than a.