Q 1114434350.     An air column in a tube `32`cm long, closed at one end, is in resonance with a tuning fork. The air column in another tube, open at both ends, of length `66` cm is in resonance with another tuning for `k`. When these two tuning forks are sounded together, they produce `8` beats per second. The frequencies of the `2` tuning forks are(consider fundamental frequencies only)

EAMCET 2014
A

`250Hz, 258Hz`

B

`240Hz, 248Hz`

C

` 264Hz, 256Hz`

D

`280Hz, 272Hz`

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