A cylindrical tube $(L = 120\, cm.)$ is resonant with a tuning fork of frequency $330\, Hz$. If it is filling by water then to get resonance again, minimum length of water column is ...... $cm$ $(v_{air} = 330\, m/s)$
A cylindrical tube $(L = 120\, cm.)$ is resonant with a tuning fork of frequency $330\, Hz$. If it is filling by water then to get resonance again, minimum length of water column is ...... $cm$ $(v_{air} = 330\, m/s)$
- A
$45$
- B
$60$
- C
$25$
- D
$20$
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