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In a stationary wave pattern that forms ...

In a stationary wave pattern that forms as a result of reflection pf waves from an obstacle the ratio of the amplitude at an antinode and a node is `beta = 1.5.` What percentage of the energy passes across the obstacle ?

A

`96%`

B

`4%`

C

`94%`

D

`6%`

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The correct Answer is:
C
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