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When a string is divided into three segm...

When a string is divided into three segments of length `l_1,l_2` and `l_3` the fundamental frequences of these three segments are `v_1, v_2` and `v_3` respectively. The original fundamental frequency (v) of the string is

A

`v=v_1+v_2+v_3`

B

`1/v=1/v_1 + 1/v_2 + 1/v_3`

C

`1/sqrtv = 1/sqrt(v_1) + 1/sqrt(v_2) + 1/sqrt(v_3)`

D

`sqrtv = sqrt(v_1) + sqrt(v_2) + sqrt(v_3)`

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