Question

As a wave strikes against a wall:
(a) its phase changes by 180°, but velocity does not change
(b) its phase does not change, but velocity changes
(c) its velocity changes and phase two changes by 180°
(d) nothing can be predicted about changes in its velocity and phase
Anyone?​

Answer 1

I think option (C)

but I am not sure....

Answer 2

${\huge{\sf{\green{\underline {\underline {Answer }}}}}}$

option c is the correct answer....

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