16 tuning forks are arranged in increasing value of frequencies Each tuning fork gives 6 beat per sec with either neighbour tuning forks if the last frequency in an octave of the first frequency what would be the lowest frequency?

Explanation

Frequencies are arranged In increasing order frequency of Pth tuning fork
`n_p=n_1+(p-1)n=n_1+(16-1)xx6`
` n=15xx6 =90`Hk