Velocity of sound \(=330 \,m / s\)
Frequency of incident sound on wall \(\left(f_1\right)=\frac{v}{v-v_s} \times f\)
Frequency of sound observed by driver \(\left(f_2\right)=\frac{v+v_s}{v} \times f_1\)
or \(f_2=\frac{v+v_s}{v-v_s} \times 600\)
or \(f_2=\frac{360}{300} \times 600\)
or \(f_2=720 \,Hz\)
(બન્ને આદર્શ વાયુઓ ધારો)
(ગુણકારનો અચળાંક $1$ લો)