A source `S` emitting sound of `300 Hz` is fixed on block `A` which is attache to free end of a spring `S_(A)` as shown in figure. The detector `D` fixed on block `B` attached to free end of spring `S_(B)` detects this sound. The blocks `A` and `B` simultaneously displaced towards each other thrugh a distance of `2.0m` and then left to vibrate. If the product of maximum and minimum freuquencies of sound detected by `D` is `K + 10^(4) sec^(-2)`. Find `K`. Given the vibrational frequencies of each block is `5//pi Hz`. speed of sound in air `= 300 m//s`
