Physics · 2019
JEE Main · 12 April 2019, Shift 1 · Q12
A progressive wave travelling along the positive x -direction is represented by y(x, t )= A sin (k x-ω t +φ). Its snapshot at t =0 is given in the…
A progressive wave travelling along the positive $\displaystyle x$-direction is represented by $\displaystyle y(x, \mathrm{t})=\mathrm{A} \sin (k x-\omega \mathrm{t}+\phi)$. Its snapshot at $\displaystyle \mathrm{t}=0$ is given in the figure.
For this wave, the phase $\displaystyle \phi$ is :
For this wave, the phase $\displaystyle \phi$ is :Official answer
(4)
$\displaystyle \pi$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.