A set 65 tuning forks is arranged so that each gives 3 beats per second with the previous one and the frequency of last fork is an octave of first. Th
A set 65 tuning forks is arranged so that each gives 3 beats per second with the previous one and the frequency of last fork is an octave of first. Then the frequencies of first and last tuning forks are
A. 192 Hz, 384 Hz
B. 64 Hz, 26 Hz
C. 384 Hz, 576 Hz
D. 64 Hz, 64 Hz
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Correct Answer - A
`N = (n_(L) - n_(f))/(x) + 1`
`65 -1 = (2n - nf)/(3)`
`64 xx 3 = n_(f)`
`192 = n_(f)`
`n_(L) = 2n_(f) = 2 xx 192 = 384 Hz`
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