Question:
A progressive wave travelling along the positive $x$-direction is represented by $y(x, t)=\operatorname{Asin}(k x-\omega t+\phi)$. Its snapshot at $t=0$ is given in the figure.
For this wave, the phase $\phi$ is:
$-\frac{\pi}{2}$
$\pi$
0
$\frac{\pi}{2}$
Question of from chapter.
JEE Main Previous Year 12 April 2019 I
Correct Option: 2
Solution:
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This represents a: