Question

Two open organ pipes of fundamental frequencies n1 and n2 are joined in series. the fundamental frequency of the new pipe so obtained will be :

Answer 1

i think when both are join then it's frequency would be n1+n2.

Answer 2

$\frac{v}{2L1}$ = n1

where v is velocity of sound in air and

L1 = length of first organ

similarly proceed to get the answer