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Frequency of vibration of a wire varies inversely with its length. The frequency is 220 Hz when the length of the wire is 120m. Find the frequency of the wire when its length is 100 m.A. 261B. 262C. 280D. 264

Answer» Correct Answer - D
(i) Use inverse variation concept.
(ii) given, F is inversely proportional to l.
`implies(F_(1))/(F_(2))=(l_(2))/(l_(1))`


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