\({T}=900\, {N}\)
\({V}=\sqrt{\frac{{T}}{\mu}}=\sqrt{\frac{900}{9 \times 10^{-4}}}=1000 \,{m} / {s}\)
\({f}_{1}=500 \,{Hz}\)
\({f}=550\)
\(\frac{{nV}}{2 \ell}=500 \ldots . \text { (i) }\)
\(\frac{({n}+1) {V}}{2 \ell}=500 \ldots(ii)\)
\((ii)\, (i)\) \(\frac{{V}}{2 \ell}=50\)
\(\ell=\frac{1000}{2 \times 50}=10\)
(બન્ને આદર્શ વાયુઓ ધારો)
(ગુણકારનો અચળાંક $1$ લો)