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in a plane progaressive harmonic wave pa...

in a plane progaressive harmonic wave particle speed is always less than the wave speed if.

A

amplitude of wave is less than `lambda/(2 pi)`

B

amplitude of wave is greater than `lambda /(2 pi ) `

C

amplitude to wave is less than ` lambda`

D

amplitude of wave is greater than ` lambda / pi`

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The correct Answer is:
A
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