The equation of a stationary wave is ` y = 0.8 cos ((pi x)/(20)) sin 200 pi t` where ` x` is in cm and t is in s. The separation between consecutive nodes will be
A
20 cm
B
10 cm
C
40 cm
D
30 cm
Text Solution
Verified by Experts
The correct Answer is:
A
`k=(pi)/20=(2pi)/(lambda)` `(lambda)/2=20 cm`
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