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Air is blown at the mouth of a tube of l...

Air is blown at the mouth of a tube of length 25 cm
and diameter equal to 2 cm open at both ends. If
velocity of sound in air is `330 ms^(-1)`, the sound emitted
will have all the frequencies in the group

A

330, 990, 1690 Hz

B

302, 664, 1320 Hz

C

660, 1320, 1980Hz

D

660 , 1000 , 3300 Hz

Text Solution

Verified by Experts

The correct Answer is:
C
`n=(v)/(2l) = (330)/(2xx0.25) = 660Hz`
Frequency of overtones are 1320, 1980, 2640….
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