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(B) When two waves of the same frequency and velocity travel in opposite directions,they form a standing wave.The distance between two consecutive nod

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$\frac{10}{n}$

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(B) When two waves of the same frequency and velocity travel in opposite directions,they form a standing wave.The distance between two consecutive nodes in a standing wave is given by $x = \frac{\lambda}{2}$.We know that the wave speed $v$ is related to frequency $n$ and wavelength $\lambda$ by the formula $v = n \lambda$,which implies $\lambda = \frac{v}{n}$.Substituting the value of $\lambda$ into the distance formula:$x = \frac{1}{2} \left( \frac{v}{n} \right) = \frac{v}{2n}$.Given $v = 20 \ m/s$,we have:$x = \frac{20 \ m/s}{2n} = \frac{10}{n} \ m$.

Two waves of same frequency $n$ are approaching each other with same velocity,$v = 20 \ m/s$ and interfere. The distance between two consecutive nodes is

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