Wave Motion Ques 34
- A wave represented by the equation $y=a \cos (k x-\omega t)$ 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
(1988, 1M)
(a) $a \sin (k x+\omega t)$
(b) $-a \cos (k x-\omega t)$
(c) $-a \cos (k x+\omega t)$
(d) $-a \sin (k x-\omega t)$
Show Answer
Answer:
Correct Answer: 34.(c)
Solution:
Formula:
- For a stationary wave to form, two identical waves should travel in opposite direction. Further at $x=0$, resultant $y$ (from both the waves) should be zero at all instants.
BETA
