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A tuning fork vibrates and produces conc...

A tuning fork vibrates and produces concentric circular transverse wave on the surface of water. If the distance between 10 crests is 9.0m and velocity of wave on the surface of water is 450m/s, the frequency of the tuning fork is

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Distance between 10 crest = 9m.
`lamda = 0.9m v =nlamda n = v/lamda` = 450/0.9 = 500 Hz
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