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56 tuning forks are so arranged in serie...

56 tuning forks are so arranged in series that each fork gives 4 beats per second with the previous one.The frequency of the last fork is three times that of the first.The frequency of the fork is

A

220 Hz

B

110 Hz

C

330 Hz

D

440 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
`N = (n_(L) - n_(f))/(x) + 1`
`56 = (3n_(f) - n_(f))/(4) + 1`
`55 xx 4 = 2n_(f)`
`:. n_(f) = 110`
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