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A pipe of lengths 10 cm, closed at one edn, has frequency equal to half the `2^(nd)` overtone of another pipe open at the ends. The lengths of the open pipe isA. 10cmB. 20cmC. 35cmD. 30cm |
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Answer» Correct Answer - D `(3n_0)/(2) =n therefore n_0 = (2n)/(3)` `(v)/(2l_0) = 2/3xx(v)/(4l_c)` `l_0 = 3xx10=30cm` |
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