A set of 56 tuning forks is arranged in a sequence of increasing frequencies . If each fork gives 4 beats//s with the preceding one and the last fork is found to be an octave higher of the first , find the frequency of the first fork.

A set of 56 tuning forks is arranged in a sequence of increasing frequ

1.	A set of 56 tuning forks is arranged in a sequence of increasing frequencies . If each fork gives 4 beats//s with the preceding one and the last fork is found to be an octave higher of the first , find the frequency of the first fork.
Answer» Solution :Frequency of first fork ` = N . "Frequency of 56 TH fork" = 2 n` `:.n + (56 - 1)4 = 2n` `:. n + 220 = 2 n` `n = 220 HZ`