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Questions  

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

a
104 m/s
b
1 m/s
c
10-4 m/s
d
Not derivable from above data

detailed solution

Correct option is A

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

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