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If n1, n2 and n3 are the fundamental fre...

If `n_1, n_2` and `n_3` are the fundamental frequency of three segemnts into which a string is divided, then the original fundamental frequency n of the string is given by

A

`1/n = 1/n_1 + 1/n_2 + 1/n_3`

B

`1/sqrtn = 1/sqrtn_1 + 1/sqrtn_2 + 1/sqrtn_3`

C

`sqrtn = sqrtn_1 + sqrtn_2 + sqrtn_3`

D

`n = n_1 + n_2 + n_3`

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