Question 136: Waves

Question

A progressive wave travelling along the positive x-direction is represented by y(x,t) = Asin(kx – $\omega $t + $\phi $). Its
snapshot at t = 0 is given in the figure.
For this wave, the phase $\phi $ is :
![](https://imagex.cdn.examgoal.net/3rsa0w2w9jx3pserq/49f97d57-a229-4069-915a-a46d397d8bb7/626c5660-92d4-11e9-86c1-73f7f991b766/file-3rsa0w2w9jx3pserr.png)

Accepted Answer

y = A sin (kx Ã¢ÂÂ wt + $\varphi $)
at x = 0, t = 0 and slope is negative
$ \Rightarrow \varphi  = \pi $

Answer

${\pi  \over 2}$

Answer

$\pi $

Answer

0

Answer

$ - {\pi  \over 2}$

Waves

A progressive wave travelling along the positive x-direction is represented by y(x,t) = Asin(kx – \omega t + \phi ). Its snapshot at t = 0 is given in the figure. For this wave, the phase \phi is :

Choose the correct answer: