A wave is travelling in the +ve x - dire...

A wave is travelling in the +ve x - direcction having displacement along y-direction as 1m,wavelength 2 pi m and frequency of `1/ pi Hz `is:

`y = sin(10 pi x-20 pit)`

`y=sin (2pi x +2pi t)`

`y = sin(x-2t)`

`y= sin (2 pi x - 2 pi t)`.

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