A wave $y = a\,\sin \,\left( {\omega t - kx} \right)$ on a string meets with another wave producing a node at $x = 0$. Then the equation of the unknown wave is
A wave $y = a\,\sin \,\left( {\omega t - kx} \right)$ on a string meets with another wave producing a node at $x = 0$. Then the equation of the unknown wave is
- A
$y = a\,\sin \,\left( {\omega t + kx} \right)$
- B
$y = - a\,\sin \,\left( {\omega t + kx} \right)$
- C
$y = a\,\sin \,\left( {\omega t - kx} \right)$
- D
$y = - a\,\sin \,\left( {\omega t - kx} \right)$
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