Physics - Sound Wave Question with Solution | TestHub

Reverberation Time $$T=\frac{0\cdot 61V}{AS}$$ Where $V=$ Volume of room in cubic metre $A=$ Average coefficient of the room $S=$ Total surface area of room Then, $$\begin{array}{rl}& T\propto \frac{V}{S}\\ & \text{ or }\frac{T_1}{T_2}=\left(\frac{V_1}{V_2}\right)\left(\frac{S_2}{S_1}\right)=\left(\frac{V}{8V}\right)\left(\frac{45}{5}\right)\\ & =\frac{1}{2}\\ & \therefore T_2=2T_1=2\times 1=2\sec .\\ & \left(\because T_1=1\sec \right)\\ & \end{array}$$