A) 105 Hz
B) 1.05 Hz
C) 1050 Hz
D) 10.5 Hz
Correct Answer: A
Solution :
[a] For string fixed at both the ends, resonant frequency are given bywhere symbols have their usual meanings, if is given that 315 Hz and 420 Hz are two consecutive resonant frequencies, Jet these be nth and harmonics. |
...(i) |
...(ii) |
Dividing Eq. (i) by Eq. (ii). we get |
From Eq. (i), lowest resonant frequency, |
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