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A wave travelling in the +ve x-direction...

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

A

`y=sin(2pix-2pit )`

B

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

C

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

D

`y=sin(x-2t)`

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The correct Answer is:
D
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