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A wave travelling along positive x -axis...

A wave travelling along positive x -axis is given by `y = A sin (omega t- kx)`. If it is reflected from rigid boundary such that 80% amplitude is reflected, then equation of reflected wave is

A

`y = A sin(omega t+kx)`

B

`y = -0.8 A sin(omega t+kx)`

C

`y = 0.8 A sin (omega t+kx)`

D

`y = A sin (omega t+0.8 kx)`

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The correct Answer is:
B
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