Two open organ pipes of fundamental frequencies $n_{1}$ and $n_{2}$ are joined in series. The fundamental frequecny of the new pipe so obtained will be
Two open organ pipes of fundamental frequencies $n_{1}$ and $n_{2}$ are joined in series. The fundamental frequecny of the new pipe so obtained will be
- [NEET 2017]
- A
$\frac{{{n_1} + {n_2}}}{2}$
- B
$\sqrt {{n_1}^2 + {n_2}^2} $
- C
$\;\frac{{{n_1}{n_2}}}{{{n_1} + {n_2}}}$
- D
$\;({n_1} + n_2)$
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