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 :

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: