Question

Select One Option Correct from the following : A wave represented by the equation $y = a \cos(kx- \omega t)$ is superimposed with another wave to form a stationary wave such that point x = 0 is a node. The equation for the other wave is
(A) $a \sin (kx+\omega t)$
(B) $-a \cos (kx-\omega t)$
(C) $-a \cos (kx+\omega t)$
(D) $-a \sin (kx-\omega t)$

Answer 1

a option is correct I think

Answer 2

Select One Option Correct from the following : A wave represented by the equation $y = a \cos(kx- \omega t)$ is superimposed with another wave to form a stationary wave such that point x = 0 is a node. The equation for the other wave is

✔️ (A) $a \sin (kx+\omega t)$

(B) $-a \cos (kx-\omega t)$

(C) $-a \cos (kx+\omega t)$

(D) $-a \sin (kx-\omega t)$