A standing wave is represented by Y=A sin (100t) cos (0.01x)where Y and A are in millimetre, t is in seconds and x is in metre. The velocity of wave is

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104 m/s

1 m/s

10-4 m/s

Not derivable from above data

answer is A.

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Detailed Solution

By comparing given equation with y=asin(ωt)coskx⇒v=ωk=1000.01=104m/s

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