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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2014
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Q)

The number of possible natural oscillations of air column in a pipe closed at one end of length 85 cm whose frequencies lies below 1250 Hz are: (velocity of sound = $340 \;ms^{-1}$)


( A ) 5
( B ) 6
( C ) 7
( D ) 4

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