\(\rho = 1.3\,\frac{{kg}}{{{m^3}}}\),
\(P = 1.01\, \times {10^5}\,\frac{N}{{{m^2}}}\)
\({v_{{\rm{sound}}}} = \sqrt {\frac{{\gamma \,P}}{\rho }} \)
\(\gamma = 1.41\)
\(\gamma = 1 + \frac{2}{f}\)
\(f = \frac{2}{{\gamma - 1}} = \frac{2}{{1.4 - 1}} = 5.\)
$[\,dB$ માં લબ્ધિ $\left.=10 \log _{10}\left(\frac{ P _{ o }}{ P _{i}}\right)\right]$