1.

The equation of a wave is y = 0.1 sin (100 pi t - kx) where x , y are in metres and t in seconds . If the velocity of the wave is 100 m/s , then the value of k is

Answer»

`1 m^(-1)`
`2 m^(-1)`
`PI m^(-1)`
`2 pi m^(-1)`

SOLUTION :`v = (omega)/(K) implies k = (omega)/(v) = (100 pi)/(100) = pi m^(-1)`


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