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Two waves are approaching each other with a velocity of 20 m/s and frequency n. The distance between two consecutive nodes is 

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a
20n
b
10n
c
5n
d
n10

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detailed solution

Correct option is B

Distance between the consecutive node =λ2, but λ=vn=20n  so  λ2=10n


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Equation of a stationary wave is y=10sinπx4cos20πt. Distance between two consecutive nodes is 


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