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(B) The distance between $N$ consecutive crests is given by $(N-1) \lambda$,where $\lambda$ is the wavelength.Given that the distance between $5$ cons

Vedclass · Accepted Answer

$280$

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(B) The distance between $N$ consecutive crests is given by $(N-1) \lambda$,where $\lambda$ is the wavelength.Given that the distance between $5$ consecutive crests is $0.8 \ m$,we have:$4 \lambda = 0.8 \ m$$\lambda = \frac{0.8}{4} = 0.2 \ m$Using the wave equation $v = n \lambda$,where $v$ is the velocity and $n$ is the frequency:$n = \frac{v}{\lambda}$Substituting the given values $v = 56 \ m/s$ and $\lambda = 0.2 \ m$:$n = \frac{56}{0.2} = 280 \ Hz$Therefore,the frequency of the tuning fork is $280 \ Hz$.

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